Al-Mn Alloy with Various Mn Contents

He Jianjun Chen Zhenhua Yan Hongge Gao Wenli

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Al-Mn Alloy with Various Mn Contents
Issue 10, (2005)
Published： 2005 ，
DOI：

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[1]何建军,陈振华,严红革,高文理.不同Mn含量的Al-Mn合金的研究[J].特种铸造及有色合金,2005(10):15-17+4.

He Jianjun Chen Zhenhua Yan Hongge Gao Wenli. Al-Mn Alloy with Various Mn Contents. [J]. Special Casting & Nonferrous Alloys (10).(2005)
[1]何建军,陈振华,严红革,高文理.不同Mn含量的Al-Mn合金的研究[J].特种铸造及有色合金,2005(10):15-17+4. DOI：

He Jianjun Chen Zhenhua Yan Hongge Gao Wenli. Al-Mn Alloy with Various Mn Contents. [J]. Special Casting & Nonferrous Alloys (10).(2005) DOI：

摘要

采用固液混合铸造研究了Al-10Mn、Al-15Mn和Al-20Mn合金的显微组织和力学性能。研究表明:固液混合铸造能有效地细化Al-Mn合金组织

其初生相尺寸可控制在10μm以内

且形貌以球形或等轴状为主;合金的抗拉强度大大提高

由传统铸造的40

0MPa提高到110

60MPa

伸长率由零提高到1%左右;传统铸造和固液混合铸造的Al-Mn高合金的组织随着Mn含量的增加而更加粗大

抗拉强度则下降

硬度有所提高。采用固液混合铸造这一新型的材料制备技术

可以扩展Al-Mn等高合金材料的研究和应用的成分范围。

Abstract

The microstructure and mechanical properties of the Al-10Mn

Al-15Mn and Al-20Mn alloys prepared by solid-liquid casting were researched.It is revealed that the microstructure of the Al-Mn alloy can be obviously refined by liquid-solid casting

in which the size of the primary phase with spheroidal or equiaxed shape is lower than 10 μm.Compared with that in conventional casting methods

the tensile strength of the Al-Mn alloy in solid-liquid casting is increased by 110～160 MPa from 40～60 MPa and elongation is increased by 1% from zero.The microstructure of the Al-Mn alloy in both conventional casting and solid-liquid casting become coarser with the increase of the Mn contents so the tensile strength was decreased and hardness is slightly increased.The solid-liquid casting can extend the composition scope of the Al-Mn alloy for research and application.