等径道角挤压法制备半固态MB15-RE镁合金坯

赵祖德; 单巍巍; 罗守靖

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等径道角挤压法制备半固态MB15-RE镁合金坯
Preparation of Semi-solid MB15-RE Billets by Equal Channel Angular Extrusion
2006年第11期页码：707-709
纸质出版日期： 2006 ，
DOI：

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[1]赵祖德,单巍巍,罗守靖.等径道角挤压法制备半固态MB15-RE镁合金坯[J].特种铸造及有色合金,2006(11):707-709+677.

Zhao Zude~1, Shan Weiwei~2, Luo Shoujing~2. Preparation of Semi-solid MB15-RE Billets by Equal Channel Angular Extrusion[J]. Special Casting & Nonferrous Alloys, 2006,(11):707-709.
[1]赵祖德,单巍巍,罗守靖.等径道角挤压法制备半固态MB15-RE镁合金坯[J].特种铸造及有色合金,2006(11):707-709+677. DOI：

Zhao Zude~1, Shan Weiwei~2, Luo Shoujing~2. Preparation of Semi-solid MB15-RE Billets by Equal Channel Angular Extrusion[J]. Special Casting & Nonferrous Alloys, 2006,(11):707-709. DOI：

摘要

研究了等径道角挤压法制备半固态MB15-RE镁合金坯

其中包括挤压前后力学性能对比和半固态球化过程微观组织演变规律。分析结果表明

等径道角制备得到的MB15-RE镁合金力学性能大大提高

抗拉强度由铸态的154·7MPa提高到312·5MPa

伸长率由7·3%提高到13·0%。半固态组织晶粒细小、均匀、圆整度好

最小晶粒尺寸可达到5

0μm

圆整度接近1·3。

Abstract

Mechanical properties and microstructure of semi-solid MB15-RE magnesium alloy billets prepared by ECAE have been investigated. The results show that the mechanical properties of the MB15-RE magnesium alloy prepared by ECAE can be improved remarkably. Tensile strength and elongation of the alloy are increased by 312.5 MPa from 154.7 MPa and by 13% from 7.3% in as-cast

respectively. The semi-solid microstructure with fine

uniform and spherical grain can be obtained in ECAE

in which the grain with 5

0 μm in size and 1.3 in roundness can be formed.