EFFECT OF AGING ON THERMOELASTIC MARTENSITE TRANSFORMATION IN Cu-Zn-Al ALLOY

Acta Metall Sin

1985, Vol. 21

Issue (6): 26-32 DOI:

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EFFECT OF AGING ON THERMOELASTIC MARTENSITE TRANSFORMATION IN Cu-Zn-Al ALLOY

by WANG Mingpu;CAO Mingsheng Central South Institute of Mining and Metallurgy; Changsha

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by WANG Mingpu;CAO Mingsheng Central South Institute of Mining and Metallurgy; Changsha. EFFECT OF AGING ON THERMOELASTIC MARTENSITE TRANSFORMATION IN Cu-Zn-Al ALLOY. Acta Metall Sin, 1985, 21(6): 26-32.

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Abstract The effect of aging on the thermoelastic martensite transformation of thecommercial. pure Cu-17.99 at. -%Zn-13.63 at.-%Al alloy with M_s over room tempe-rature has been studied by means of the measurement of electrical resistance.When the alloy was fully aged in the martensite state immediately after quench-ing from high temperature in the disordered β-phase region, the thermoelasticmartensite may be stabilized and featured no more in the thermoelastic transformation or reversal on the resistance-temperature curve. When the alloy was agedin the β_1-state immediately after quenching, as the aging time prolonging, thefeature of the thermoelastic transformation may be maintained gradually, as wellas the phase transition temperature and the relative amount of reversible transfor-mation of martensite may be gradually tending towards a stable value. In thethermal cycling afterwards, these seem to change no longer. It is suggested thatreordering in the martensite might coniribute to stabilization after aging in themartensite state.

Received: 18 June 1985

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1985/V21/I6/26

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