Gd合金化对汽车发动机用AM50合金组织和性能的影响

沈盛军; 杨淼; 张岚

doi:10.15980/j.tzzz.2016.03.024

轻有色合金 | 浏览量 : 0 下载量: 64 CSCD: 1

导出
分享
收藏
专辑

Gd合金化对汽车发动机用AM50合金组织和性能的影响
Effects of Gd Alloying on Microstructure and Corrosion Resistance of AM50 Alloy for Automotive Engine
2016年36卷第3期页码：313-316
纸质出版日期： 2016 ，
DOI： 10.15980/j.tzzz.2016.03.024

扫描看全文

[1]沈盛军,杨淼,张岚.Gd合金化对汽车发动机用AM50合金组织和性能的影响[J].特种铸造及有色合金,2016,36(03):313-316.

Shen Shengjun, Yang Miao, Zhang Lan. Effects of Gd Alloying on Microstructure and Corrosion Resistance of AM50 Alloy for Automotive Engine[J]. Special Casting & Nonferrous Alloys, 2016,36(3):313-316.
[1]沈盛军,杨淼,张岚.Gd合金化对汽车发动机用AM50合金组织和性能的影响[J].特种铸造及有色合金,2016,36(03):313-316. DOI： 10.15980/j.tzzz.2016.03.024.

Shen Shengjun, Yang Miao, Zhang Lan. Effects of Gd Alloying on Microstructure and Corrosion Resistance of AM50 Alloy for Automotive Engine[J]. Special Casting & Nonferrous Alloys, 2016,36(3):313-316. DOI： 10.15980/j.tzzz.2016.03.024.

摘要

以Gd合金化汽车发动机用AM50合金为研究对象

通过金相显微镜、X射线衍射仪、扫描电镜等手段

研究了Gd元素对铸态合金组织和耐腐蚀性能的影响。结果表明

铸态AM50合金主要由α-Mg固溶体和初生β-Mg17Al12相组成;AM50合金经过Gd合金化后

主要物相为α-Mg、β-Mg17Al12、Al2Gd3和Al0.4GdMn1.6相;Gd元素的添加可以起到细晶强化、净化除杂和弥散强化的作用;Gd合金化后的AM50合金的耐腐蚀性能都比未添加Gd元素的AM50合金好

其中当Gd含量为1%时合金具有最佳的耐腐蚀性能。

Abstract

Effects of Gd alloying on microstructure and corrosion resistance of as-cast AM50 alloy was investigated by optical microscope

X-ray diffraction and scanning electron microscope.The results show that the AM50 alloy is composed ofα-Mg solid solution and the primaryβ-Mg17Al12 phase

and the main phases in the Gd alloyed AM50 alloy areα-Mg

β-Mg17Al12

Al2Gd3 and Al0.4GdMn1.6.The addition of Gd element can play a role in fine grain strengthening

purification and dispersion strengthening.The corrosion resistance of Gd alloyed AM50 alloy is superior to those of AM50 alloy

and the AM50-2Gd alloy has the desirable corrosion resistance.