HRTEM Observation of α-Phase in Cu-Zn Alloy Annealed at Lower Temperature

Author:

Kato Koji1,Hamatani Daisuke1,Matsuda Kenji2,Kawabata Tokimasa2,Uetani Yasuhiro3,Ikeno Susumu2

Affiliation:

1. Toyama University

2. University of Toyama

3. Toyama Prefectural University

Abstract

It is known that the phase-decomposition process of 60/40 Cu-Zn alloy is so-called the bainitic transformation, and decomposition of α-phase from the β’-phase is as follow: β’ → α9R → αfcc. In this work,decomposition of α-phase from the β’ single phase of Cu-40.26at.%Zn alloy has been investigated by high-resolution transmission electron microscopy (HRTEM) to understand the phase transformation of this alloy. Especially, striations in the α-phase has been focused on the special feature for the change of the structure and hardening of this alloy during annealing. The result of a comparison between this alloy and the Si added alloy is also reported.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

Reference7 articles.

1. P.E.J. Flewitt, J.M. Towner: J. Inst. Metals. Vol. 95(1967) , p.273.

2. Yung-fu Hsu, Wen-hsiung Wang: Scripta METALLURGICA Vol. 25 (1991) , p.1059.

3. I. Cornelis, C.M. Wayman: Scripta Met., Vol. 7 (1973), p.579.

4. G.W. Lorimer, H.I. Aaronson, K.R. Kinsman: Scripta Met. Vol 9 (1974) , p.271.

5. Cyril Stanley Smith: Reviews of Modern Physics, (1942), p.144.

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