The effect of austenite ordering on the transformation temperature, transformation hysteresis, and thermoelastic behavior in Fe- Pt alloys
The effect of austenite ordering on the transformation temperature, transformation hysteresis, and thermoelastic behavior in Fe- Pt alloys
复制标题
奥氏体排序对 Fe-Pt 合金相变温度、相变滞后和热弹性行为的影响
DOI：
10.1007/bf02649832
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发表时间：
1978
期刊：
影响因子：
--
通讯作者：
C. M. Wayman
中科院分区：
文献类型：
--
作者：
M. Umemoto;C. M. Wayman
用Fe-23，24和25 at.研究了Fe-Pt合金在化学计量组成Fe_3 Pt附近，随着母相有序度的增加，相变动力学由非热弹性向热弹性转变的转变过程。Pt合金。测定了不同有序度试样的热滞、马氏体温度、马氏体四方性和相变体积变化，并讨论了这些因素之间的关系。结果表明，马氏体四方性，或等效the.degree母相的顺序，不是支配热弹性转变的主导因素。在Fe-Pt合金中，M_（？）在相变动力学中起着重要的作用，必须低于一定的M_（？）才能获得热弹性相变。
The change and transition process in transformation kinetics from a nonthermoelastic to a thermoelastic type accompanying an increase in parent phase order in Fe-Pt alloys near the stoichiometric composition Fe3Pt has been investigated, using Fe-23, 24 and 25 at. pct Pt alloys. The thermal hysteresis,Mstemperature, martensite tetragonality and transformation volume change have been measured for specimens with various degrees of order, and correlations among these factors are discussed. The results indicate that the martensite tetragonality, or equivalently the.degree of order of the parent phase, is not the dominant factor which dictates a thermoelastic transformation. TheMstempera-ture appears to play an important role in the transformation kinetics, and must be lower than a certain value to obtain a thermoelastic transformation in Fe-Pt alloys.