Welding and some of the terms which i

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The discussion focuses on seeking clarification on various welding and metallurgy terms, including undercooling in welds, quick solidification, and the phases of steel such as martensite and austenite. Participants are encouraged to share resources or links that explain these concepts better, particularly regarding phase diagrams and the differences between TTT and CCT curves for carbon content. The importance of understanding carbon diffusion, dendrites, and the effects of thermal gradients on solidification is also highlighted. The thread emphasizes the need for clear explanations to grasp these complex topics. Overall, the community aims to assist in demystifying these welding-related terms.
siukwok
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Dear all,

i need help in finding out the terms below. Tried goggle it but fail to really understand them. Anyone can help? thanks!

1. Undercooling in welds
2. Quick solidification
3. Martensite, austenite, pearlite, ferrite phase for steels
4. Phase diagram for steels
5. Difference between TTT and CCT based on 0.9% carbon content
6. Diffusion of carbon atoms, time dependent
7. Low and high carbon content
8. Dendrites
9. Thermal gradient, rate of solidification, grain growth rate and solidification front
 
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siukwok said:
Dear all,

i need help in finding out the terms below. Tried goggle it but fail to really understand them. Anyone can help? thanks!

1. Undercooling in welds
2. Quick solidification
3. Martensite, austenite, pearlite, ferrite phase for steels
4. Phase diagram for steels
5. Difference between TTT and CCT based on 0.9% carbon content
6. Diffusion of carbon atoms, time dependent
7. Low and high carbon content
8. Dendrites
9. Thermal gradient, rate of solidification, grain growth rate and solidification front

Could you give us some links to the information that you found but did not understand? Show us what you read, and tell us what part you do not understand.
 

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