Effects of temperature-induced variation of the second phase on the microstructure, texture and properties of Mg-RE-Zn alloys

被引：0

作者：

Lu, Dongliang ^{[1
]}

Wu, Guoqin ^{[1
]}

Yu, Jianmin ^{[1
]}

Liu, Yunfang ^{[1
]}

Zhang, Zhimin ^{[1
]}

Huang, Huagui ^{[2
]}

Li, Linlin ^{[3
]}

Feng, Yan ^{[4
]}

Xu, Hengqiu ^{[5
]}

机构：

[1] North Univ China, Sch Mat Sci & Engn, Taiyuan 030051, Peoples R China

[2] Yanshan Univ, Natl Engn Res Ctr Equipment & Technol Cold Strip R, Qinhuangdao 066004, Hebei, Peoples R China

[3] Jilin Engn Normal Univ, Sch Mech & Vehicle Engn, Changchun 130000, Peoples R China

[4] Beijing Innowind Aerosp Equipment Co Ltd, Beijing 100000, Peoples R China

[5] Changchun Inst Equipment Technol, Changchun 220100, Peoples R China

来源：

MATERIALS RESEARCH EXPRESS | 2024年 / 11卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Mg-RE-Zn alloy; severe plastic deformation; microstructure; mechanical properties; strength mechanism; MECHANICAL-PROPERTIES; ZR ALLOY; DYNAMIC RECRYSTALLIZATION; DEFORMATION; BEHAVIOR; REFINEMENT; PARTICLES; EXTRUSION; EVOLUTION;

D O I：

10.1088/2053-1591/ad32a5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, the Mg-9.32Gd-3.72Y-1.68Zn-0.72Zr (wt%) alloy has undergone three times of repetitive upsetting extrusion deformation. Alloys with different morphologies and distribution patterns of the second phase have been prepared by varying the deformation temperature in each pass. The effects of the second phase on microstructure, texture and mechanical properties are investigated. The results show that (i) the second phase, including Mg5Gd and LPSO phase, has an important effect on the dynamic recrystallization (DRX) behavior of the alloy. (ii) Appropriate lamella distance and block phase size can promote the activation of the slip system and effectively weaken the texture strength. (iii) The DT sample has an effective combination of fine grain strengthening and second phase strengthening due to the reasonable second phase distribution and size, which greatly improves the UTS and YS of the alloy.

引用

页数：15

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