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Post by Haixuan on Dec 31, 2019 14:48:46 GMT
Does DANTE use TTT/CCT diagrams to predict phase transformation timing?
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Post by Admin on Dec 31, 2019 14:51:31 GMT
No. Analytical phase transformation models are applied in DANTE instead of TTT/CCT phase diagrams because the application of those diagrams is limited. TTT/CCT diagrams can only describe the transformation timing, whereas the transformation timing and the transformation strains are required to properly model the stress state of the part during the heat treatment process.
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Post by Haixuan on Dec 31, 2019 14:53:06 GMT
What are the strengths of the analytical model used in DANTE to predict the phase transformations?
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Post by Admin on Dec 31, 2019 15:01:46 GMT
1) Phase transformation types for austenitization cover slow transformation during furnace heating, as well as high rate of transformation for processes such as induction heating, laser heating, flame heating, etc.
2) Phase transformations for cooling include the formation of ferrite, pearlite, bainite, and martensite. The formation of bainite includes upper bainite and lower bainite, since the two phases have significant differences in mechanical properties.
3) Formation of tempered martensite can be considered for tempering processes or for slower cooling, or self-tempering, processes.
4) The phase transformation model robustly models the effect of carbon on the phase transformation timing.
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Post by setnuscouse on Sept 25, 2020 4:57:24 GMT
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