SKMM 2613 by Wan Fahmin Faiz bin Wan Ali FKM https://padlet.com/wan_fahmin/ohxeuegnywrr Attendance for Week 3 (26/2 - 1/3 2018) - Double Click to Write A Post. en-us 2018-02-27 01:00:01 UTC 2025-03-01 01:05:25 UTC hello@padlet.com SYAHMI BIN ZAMRI (27/02/18) https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/235737255 Direction and planes of crystallography
Described by using integers MILLER INDICES
- there is no commas between numbers
- negative values are represented by using a bar above the numbers
- any edges of the cubic can be an origin
Direction of crystallography
- represented by [ ]
- forms/removes fraction by dividing/substracting the numbers with the highest integer
Plane of crystallography
- represented by ( )
- take the reciprocal when forming the plane]]> 2018-02-27 05:56:00 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/235737255 Muhammmad Aris Edham Bin Johazaly https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/235840827 2018-02-27 13:20:23 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/235840827 Mohamad Rafiq Raihan b Zuhar https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/236221524 X - ray diffraction pattern  ]]> 2018-02-28 01:14:56 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/236221524 Muhammad Najmi bin Mohd Rashdan https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/236243404 Direction and plane crystallography
- [ ] for direction
- ( ) for plane
X-ray diffraction
- use for crystal structure and interplanar spacing

]]> 2018-02-28 03:20:19 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/236243404 Muhammad Farhan Bin Razali https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/236245717 -draw direction and plane- direction [ ] & plane ( )
-solidification of pure metal and alloy
-effect of cooling rate
-casting defects & process
]]> 2018-02-28 03:36:11 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/236245717 Muzakir Azman https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/236253788 Summary]]> 2018-02-28 04:22:49 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/236253788 Afiffy Farihin https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/236269435 1) Direction [ ] , plane ( )
2) Atoms may assemble into crystalline or amorphous structures. 
3) Some materials can have more than one crystal
structure. This is referred to as polymorphism (allotropy).
4) type of imperfection : - point defect, line defect, area defect, volume defect. 


]]> 2018-02-28 06:42:22 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/236269435 Dr.Wan wan_fahmin https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/236269847 Write a summary of today's lecture. ]]> 2018-02-28 06:44:49 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/236269847 HO ZHONG WEI cky846470 https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/236344378 -Crystallographic points
directions and planes are 
specified in terms of indexing schemes. 
-Crystallographic directions and planes are related to 
atomic linear densities
and planar densities
-Four defects exist in solids- point, line, area and volume.
-The number and type of defects can be varied and controlled
-Defects affect material properties
-Defects may be desirable or undesirable.
]]> 2018-02-28 12:28:49 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/236344378 Arief Izzudin Bin Mazlan ariefizzudin99 https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/236356812 1. Direction and plane crstallography
Direction - [ ]
Plane - ( )
2. Solidification
3. Cooling curve
4. Casting defects

]]> 2018-02-28 13:05:43 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/236356812 Fikhri B Abdullah https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/236737128 1) Direction [ ] , plane ( )
2) Atoms may assemble into crystalline or amorphous structures. 
3) Some materials can have more than one crystal
structure. This is referred to as polymorphism (allotropy).
4) type of imperfection : - point defect, line defect, area defect, volume defect. 
]]> 2018-03-01 01:09:57 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/236737128 Lim Yee Heng https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/236913250 1) how to draw the miller indices for crystallographic direction and planes
2) solidification involves 
     -nuclei form 
     -nuclei grow to form crystals
3) imperfection of solid, 
-point defect: vacancy,interstitial and substitutional of atoms
-line defect: dislocation (slip between crystal planes) , includes edge and screw dislocation
-area defect: grain boundaries impede dislocation motion
-volume defect: casting defect
4) defects affect material properties but have its pros and cons.

]]> 2018-03-01 14:23:54 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/236913250 Cheng Hui Lun https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/237283365 Direction and plane of crystallographic 
Solidification 
4 types of imperfection

]]> 2018-03-02 05:19:41 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/237283365 Kong meng hong kongmenghongisaac https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/237683464 -Method to draw , find and read the coordination of crystallographic
-the type of defection in atomic arrangement during solidification and the effect of defection


]]> 2018-03-03 13:01:52 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/237683464 Loh Jia Cheng https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/237687079 -Crystallographic direction and planes
-Solidification process
-Imperfections

]]> 2018-03-03 13:46:22 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/237687079 Daniel Rifqi https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/238661540 1) Direction and Plane for Crystallographic
2) Imperfections in Solid]]> 2018-03-06 15:20:28 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/238661540 Abdul Mukmin Muhammad https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/238671509
  • Plane and Direction
  • Solidification 
    • Nucleiform
    • Nucleus grow
  • Cooling curve for pure metal and alloy
  • Microscopic structure of casting pure metal and alloy
  • Imperfections
    • Point defect - vacancy, interstitial, substitutial
    • Line defect - dislocation
    • Area defect - grain boundaries
    • Volume defect - casting defect 
    • ]]>     2018-03-06 15:33:09 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/238671509     Azam Hassan https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/238683271 Plane ( ) and direction [ ]
    Solidification with graph 
    4 types of Imperfections in solid]]>     2018-03-06 15:46:53 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/238683271     Muhammad Haziq Bin Mazlan https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/238760863 1. Direction and plane
    2. Solidification
    • Nuclei formation
    • Nucleus growth
    3. Cooling rate, cooling curve
    • Undercooling
    • How different metals have different pro
    ]]>     2018-03-06 17:31:26 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/238760863     Teeab Tahzib - A16KM4004 https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/238762112 - Directions and planes of crystallography 
    - solidification of pure metal and alloys
    - point defects, line defects etc. 
    - ‎how defects are inevitable but also sometimes desirable 
    - ‎How cooling rate affects the material ]]>     2018-03-06 17:33:07 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/238762112     Nazif Nashran bin Mohd Zalani https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/238766775 1. Direction and plane crystallography
    - [ ]  direction
    - ( ) plane
    2. X-ray diffraction
    3. Solidification process
    - nuclei formation and growth
    4. Cooling curve
    5. Casting defects. ]]>     2018-03-06 17:39:45 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/238766775     Muhammad Redzuan Bin Mohd Rafani https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/238781048 -Plane and Direction
    -Solidification 
     +Nucleiform
     +Nucleus grow
    -Cooling curve for pure metal and alloy
    -Microscopic structure of casting pure metal and alloy
    -Imperfections
     +Point defect - vacancy, interstitial, substitutial
     +Line defect - dislocation
     +Area defect - grain boundaries
    +Volume defect - casting defect 


    ]]>     2018-03-06 17:59:25 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/238781048     Muhammad Afif Bin Mohd Fadzil gempak_afif https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/238792914 1. Direction and plane crystallography
    - [ ]  direction
    - ( ) plane
    2. X-ray diffraction
    3. Solidification process
    - nuclei formation
    -Nucleus grow
    4. Cooling curve for pure metal and alloy
    5. Imperfection 
     #Area defect
     - grain boundaries
     #Volume defect
      - casting defect 
     #Point defect
     - vacancy, interstitial, substitutial
     #Line defect 
     - dislocation]]>     2018-03-06 18:15:59 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/238792914     Ikmal Ramdani Bin Sa https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/238942949 -Plane and direction.
    -Cooling effect for certain type of solid.
    -Casting effect.
    -Drawing of solidification of pure metal and alloy]]>     2018-03-06 23:39:41 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/238942949     Leong Joe Yee https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/238994609 1. Nucleation processes
        - homogenous
        - heterogenous
    2. Cooling curve
        - metal 
        - alloy 
        - casting
        - undercooling
    3. Solidification defects
        - point defects
        - line defects
        - area defects
        - volume defects
    4.  Direction [ ] and plane ( )
     of crystallographic]]>     2018-03-07 04:17:54 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/238994609     Fatin Nur Syahirah Bt Mohd Shahril https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239018210 1) Direction [ ] and plane ( ) of crystallography

    2) Solidification process
        -nuclei formation 
        -nucleus growth

    3) Imperfection in Solid
        -Area defects
        -Volume defects
        -Point defects
        -Line defects]]>     2018-03-07 07:32:08 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239018210     Nur Farah Hanis bt Kamalulzaman https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239034540 1. Direction [ ] and plane ( )
    2. Solidification (nucleation processes) 
     - homogenous and heteregenous nucleation
     - graph Tempt vs t for metal and alloy. 
    3. Type or imperfection 
     - point defect 
      -----> vacancy, interstitial and substitutional atoms
     - line defect (dislocation) 
    - area " ( crain boundaries) 
    - volume " ( casting defect

    ]]>     2018-03-07 08:39:03 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239034540     Nur Ain Fatihah Binti Murad https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239047962 Solidification
    -nuclei form
    -nuclei growth
    -cooling graph (metal and alloy)
    -undercooling curve
    Solidification defects on casting
    -chill crystal
    -columnar
    -equiaxed grain
    Imperfection in solid
    -types( points defect, line defect, area defect , volume defect) 
    ]]>     2018-03-07 09:29:15 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239047962     Wan Mirza Haziq https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239054493 1) Type of Defect: - line defect,  point defect, area defect, volume defect.
    2) Direction use [ ] and coordination use ( ).
    3) Nucleation processes consist of homogenous & heterogenous.
    4) Cooling Curve
    - Cooling of liquid
    - Under Cooling
    - Solidification
    - Cooling of solid]]>     2018-03-07 09:49:57 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239054493     Siti Aishah https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239056051 1) Direction [ ] and plane ().
    2) Cooling effect of metal.
    3)Solidification:Nyucleation Processes
    -Homogeneous nucleation
    -Heteregeneous nucleation
    4)defect in crystalline structure
    -point defect,line defect,area defect,volume defect]]>     2018-03-07 09:54:55 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239056051     https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239056505 2018-03-07 09:56:20 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239056505 Muhd Syafq b. Midzi https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239064356 -In metals and alloys can occur dislocation such as edge and screw dislocation.
    -there are 2 slip system,slip plane and slip direction
    -deformation only occur on one plane only if there are multiple plane or one]]>     2018-03-07 10:21:47 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239064356     Fatin Humaira Radi https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239085767 -Planes and directions (miller indices directions)
    -Heterogeneous nucleation (pure metal/alloy)
    -Casting 
    -Types of imperfections/defects]]>     2018-03-07 11:37:46 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239085767     Muhammad Haniff https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239096833 Direction and plane of crystallography 
    X ray diffraction 
    Imperfections in solids
    Solidification 
    Solidification defec]]>     2018-03-07 12:15:47 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239096833     Muhammad Aris Edham Bin Johazaly https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239100896 -Directions and planes of crystallography 
    -Solidification (nucleation processes) 
     - homogenous and heteregenous nucleation
    -Cooling curve for pure metal and alloy
    - Imperfection 
     #Area defect
     - grain boundaries
     #Volume defect
      - casting defect 
     #Point defect
     - vacancy, interstitial, substitutial
     #Line defect 
     - dislocation]]>     2018-03-07 12:30:17 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239100896     Nur Adriana Bahiyah binti Shukur https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239118657 2018-03-07 13:21:48 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239118657 Mohamad Faris Bin Dunya https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239167109 Imperfections in Solids
    Solidification-result of casting of molten material
    Homogeneous and heterogeneous nucleation

    Polycrystalline Materials
    Grain boundaries

    Solidification defects
    Casting defects 

    Points defect - vacancy , interstitial,substitutional
    Line defect - dislocations

    ]]>     2018-03-07 14:46:48 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239167109     Mohamad Amar Syafiq Zulkiflee https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239199620 Direction and plane

    Cooling effect ]]>     2018-03-07 15:29:17 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239199620     Muhammad farhan bin azmi farzmy95 https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239510292 Cooling effect
    Solidification
    Casting
    Type of defect]]>     2018-03-08 05:38:02 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239510292     Muhammad Aiman bin Abdul Samad https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239510355 -Directions and planes of crystallography 
    -Solidification (nucleation processes) 
     - homogenous and heteregenous nucleation
    -Cooling curve for pure metal and alloy
    - Imperfection ]]>     2018-03-08 05:38:30 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239510355     Badrun Naim bin Mohd Fuad https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239530900 Solidification
    type of defect
    -cast defect
    -line defect]]>     2018-03-08 07:55:22 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239530900     Zul Fadhli Bin Idris https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239673011 2018-03-08 14:40:58 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239673011 Muhammad Aminuddin Bin Abdullah https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239680241 Solidification
    Type of defect
    Cooling effect
    Direction and plane]]>     2018-03-08 14:50:12 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239680241     Muhammad Iqbal b. Jamal Asri https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239680492 2018-03-08 14:50:32 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239680492 mohd izdiyad ikliluddin https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239723424 imperfections in solids
    -defects(affects materials impurities)
    -dislocation in motion]]>     2018-03-08 15:46:34 UTC https://padlet.com/wan_fahmin/ohxeuegnywrr/wish/239723424