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Creep Induced Phase Transformation in Extruded Zn-Al Alloy

Creep Induced Phase Transformation in Extruded Zn-Al Alloy

作     者:Y.H.ZHU and J.Juarez Islas(Instituto de Investigaciones en Materiales, Universidad Nacional Autonoma de Mexico, Apartado P.70-360,Mexico D.F.04510, Mexico)E. Orozco(Instituto de Fisica, Universidad Autonoma de Mexico, Apartado P.20-364, Mexico D.F.04510, 

作者机构:Instituto de Investigaciones en Materiales Universidad Nacional Autonoma de Mexico Mexico D. F. 04510 Apartado P. 70-360 Mexico Instituto de Fisica Universidad Autonoma de Mexico Mexico D. F. 04510 Apartado P. 20-364 Mexico 

出 版 物:《Journal of Materials Science & Technology》 (材料科学技术(英文版))

年 卷 期:1997年第13卷第6期

页      面:503-507页

核心收录:

学科分类:08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程(可授工学、理学学位)] 

主  题:Al Zn Creep Induced Phase Transformation in Extruded Zn-Al Alloy 

摘      要:Phase transformation and microstructural change of an extruded eutectoid Zn-Al alloy Zn76Al22Cu2 (wt pct) were investigated during creep testing by using SEM and X-ray diffraction techniques. Creep induced decomposition of a metastable η T phase and a four phase transformation, α+ ε →T +η, occurred during the creep testing. Also a microstructural change was observed from a lamellar structure into a spheroidized structure in the rupture part of the extruded alloy. It provided evidence of creep induced phase transformations which occurred in ageing process. The mechanism of creep rupture of the extruded Zn-Al alloy was also discussed.

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