Microstructure and Mechanical Property of Mg-13Gd-0.2Ni Alloy Processed by Extrusion and Aging

扫码查看

原文链接

万方数据

外文摘要：In this work,a good combination of strength and ductility is achieved in a Mg-13Gd-0.2Ni alloy by conventional extru-sion and following aging treatment.The aged Mg-13Gd-0.2Ni alloy exhibits a yield strength(YS)of 363 MPa,an ultimate tensile strength(UTS)of 433 MPa,and an elongation of 11.9％ .The aged Mg-13Gd-0.2Ni alloy contains a microstructure with a 95％ proportion of dynamically recrystallized(DRXed)grains with a micron size,weak texture,and a high number density of prismatic β'precipitates within grains.The bulk compounds enriched with Ni element which are mainly formed during casting and stable in the extruded and aged samples.Few dynamic compounds are formed during extrusion,and a high density of prismatic β'precipitates are formed during aging.The high density of prismatic β'precipitates results in a significant increase in the strength of the Mg-13Gd-0.2Ni alloy,and the YS and UTS are increased by 153 and 136 MPa,respectively.The high proportion of DRXed grains with a weak texture contributes mainly to the high ductility and the fine compounds with a low density at grain boundaries formed during aging have no significant adverse effect on ductility of the aged Mg-13Gd-0.2Ni alloy.These findings for the novel Mg-Gd-Ni alloy can provide guidance for the design of wrought Mg alloys with superior mechanical properties.

外文关键词：

Mg-Gd-Ni alloyExtrusionAgingStrengthDuctility

作者：

Hang Zhang、Jiaying Zhao、Rongguang Li、Boshu Liu、Shanshan Li、Sha Sha、Yuehong Zhang、Man Xu、Yan Tang

展开 >

作者单位：

School of Mechanical and Power Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China

Instrumental Analysis Center,Shenyang University of Chemical Technology,Shenyang 110142,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Liaoning Province of China

项目编号：

521711215197115152201132522011312022-NLTS-18-01

出版年：

2024

DOI：

10.1007/s40195-024-01712-1

金属学报(英文版)

中国金属学会

金属学报(英文版)

CSTPCD

影响因子：0.77

ISSN：1006-7191

年,卷(期)：2024.37(8)