THERMODYNAMICS OF MARTENSITIC TRANSPORMATION IN β-Cu BASE ALLOYS

Acta Metall Sin

1991, Vol. 27

Issue (3): 13-18 DOI:

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THERMODYNAMICS OF MARTENSITIC TRANSPORMATION IN β-Cu BASE ALLOYS

XU Zuyao T. Y. Hsu; ZHOU Xiaowang Shanghai Jiaotong University

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XU Zuyao T. Y. Hsu; ZHOU Xiaowang Shanghai Jiaotong University. THERMODYNAMICS OF MARTENSITIC TRANSPORMATION IN β-Cu BASE ALLOYS. Acta Metall Sin, 1991, 27(3): 13-18.

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Abstract An approach for the thermodynamics of the thermoelastic martensitictransformation in β-Cu base alloys is suggested. Driving forces for martensitic trans-formation, T_0 and M_s temperatures in Cu-Zn, Cu-Al and Cu-Zn-Al alloys werecalculated and the calculated M_s are in good agreement with the experimental ones.Ordering of the parent phase lowers M_s in Cu-Zn and Cu-Zn-Al alloys, but risesM_s (T_0) in Cu-Al alloys. Two methods for estimation of the non-chemical freeenergy attending the thermoelastic martensitic transformation are also introduced.

Key words: β-Cu base alloy martensitic transformation thermodynamics

Received: 18 March 1991

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1991/V27/I3/13

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