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Cellular automaton modelling of M7C3 carbide growth during solidification of Fe-C-Cr alloy
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- Zhang, H. W. (författare)
- Northeastern Univ, Key Lab Electromagnet Proc Mat, Shenyang 110004, Peoples R China.;Northeastern Univ, Sch Met, Shenyang 110004, Peoples R China.
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- Zhang, S. (författare)
- Northeastern Univ, Key Lab Electromagnet Proc Mat, Shenyang 110004, Peoples R China.;Northeastern Univ, Sch Met, Shenyang 110004, Peoples R China.
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- Wang, Y. C. (författare)
- Northeastern Univ, Key Lab Electromagnet Proc Mat, Shenyang 110004, Peoples R China.;Northeastern Univ, Sch Met, Shenyang 110004, Peoples R China.
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- Northeastern Univ, Key Lab Electromagnet Proc Mat, Shenyang 110004, Peoples R China;Northeastern Univ, Sch Met, Shenyang 110004, Peoples R China. Materialvetenskap (creator_code:org_t)
- IOP Publishing, 2020
- 2020
- Engelska.
- Ingår i: International conference on modelling of casting, welding and advanced solidification processes (MCWASP XV). - : IOP Publishing.
- Konferensbidrag (refereegranskat)
Abstract
Ämnesord
Stäng
- A microscopic cellular automaton combined with macroscopic heat and solute transport was developed to simulate the mutual growth and evolution of austenite and M7C3 carbide grains during Fe-C-Cr ternary alloy solidification process. The diffusion of solute C and Cr are contributed together to the constitutional undercooling, together with curvature undercooling, for obtaining the grain growth rate of austenite and M7C3 carbide. Results show that, the absorption of solute C and Cr by M7C3 grain and rejection by austenite grain promote the two grains' cooperative growth. Once they approach to each other, the austenite grain quickly overgrows towards the M7C3 grain till finally envelops it. The simulated solidification morphology of the Fe-4wt%C-17wt%Cr alloy, predicted averaged grain size of M7C3 carbides and C and Cr concentration in austenite grains agree with the experimental measurements and solidification path prediction. The predicted average liquid concentration curve fits with the LR, GS and PE prediction at the initial M7C3 precipitation regime and after austenite grains fully enveloping towards the M7C3 grains, returns to overlap the LR, GS and PE prediction curves.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
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- Zhang, H. W.
- Zhang, S.
- Wang, Y. C.
- Hao, Y. Z.
- Miao, M.
- Nakajima, Keiji
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- Lei, H.
- Wang, Q.
- He, J. C.
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