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phase transformtion in welding

phase transformtion in welding

phase transformtion in welding

(OP)
Can any one suggest an article considering the effect of cooling rate in formation of martensite during welding and its impact on residual stress?

RE: phase transformtion in welding

Let me start with a quote from the article titled "Analysis of the effect of immersion rate on the distortion and residual stresses in quenched SAE 5160 steel using FEM" by RD. Lopez-Garcia et al.:
"When the steel cools down (...) at a slow cooling rate, microstructures are obtained that favors the appearance of a low level of residual stresses". Later on the authors say: "For these conditions [higher cooling rates], the predominant phase is the martensite phase, which will generate a greater magnitude of internal stresses (...)"

Here are some additional references with detailed information on this topic:
- "Analysis of residual stress in carbon steel weldment incorporating phase transformations" S. Cho et al.
- "Measurement and Prediction of Phase Transformation Kinetics in a Nuclear Steel During Rapid Thermal Cycles" G. Obasi et al
- "Finite element simulation of welding and residual stresses in a P91 steel pipe incorporating solid-state phase transformation and post-weld heat treatment" A.H. Yaghi et al.
- "Prediction and Measurement of Phase Transformations, Phase-Dependent Properties and Residual Stresses in Steels" M. Becker et al.
- "Metal Failures: Mechanisms, Analysis, Prevention" A.J. McEvily (chapter VII. Residual stresses developed in welding)
- "Developing material models for use in finite element predictions of residual stresses in ferritic steel welds" N. O’Meara

RE: phase transformtion in welding

(OP)
Thank you for the valuable information.

Let me go through these papers

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