As-cast Microstructure Characteristics of a New Wrought Al-Mg-Si Alloy

Zhao Qian; Yuan Xiaoguang; Lin Haibo; Huang Hongjun; Zhao Peng

doi:10.15980/j.tzzz.2015.01.006

Views : 0 下载量: 191 CSCD: 3

Export
Share
Collection
Album

As-cast Microstructure Characteristics of a New Wrought Al-Mg-Si Alloy
Vol. 35, Issue 1, Pages: 19-22(2015)
Published： 2015 ，
DOI： 10.15980/j.tzzz.2015.01.006

扫描看全文

[1]赵倩,袁晓光,林海波,黄宏军,赵鹏.Al-Mg-Si变形合金的铸态组织特征[J].特种铸造及有色合金,2015,35(01):19-22.

Zhao Qian, Yuan Xiaoguang, Lin Haibo, et al. As-cast Microstructure Characteristics of a New Wrought Al-Mg-Si Alloy. [J]. Special Casting & Nonferrous Alloys 35(1):19-22(2015)
[1]赵倩,袁晓光,林海波,黄宏军,赵鹏.Al-Mg-Si变形合金的铸态组织特征[J].特种铸造及有色合金,2015,35(01):19-22. DOI： 10.15980/j.tzzz.2015.01.006.

Zhao Qian, Yuan Xiaoguang, Lin Haibo, et al. As-cast Microstructure Characteristics of a New Wrought Al-Mg-Si Alloy. [J]. Special Casting & Nonferrous Alloys 35(1):19-22(2015) DOI： 10.15980/j.tzzz.2015.01.006.

摘要

制备了一种含Er和Zr元素的板材用Al-Mg-Si合金

其化学成分为Al-0.8Mg-1.0Si-0.8Cu-0.2Mn-0.15Zr-0.3Er。通过透射电镜、X射线衍射、扫描电镜、能谱和光学显微镜等分析

研究了合金铸态组织特征

探讨了合金均匀化退火前后析出相的变化。结果表明

添加Er、Zr元素后

铸锭的晶粒多呈等轴晶

第二相主要为Mg2Si、Al1.9CuMg4.1Si3.3、CuAl2、Al4Mn3Si2、初生Al3Er、Al3Zr和β-Si相;均匀化退火后

第二相质点分布均匀

Mg2Si、Al1.9CuMg4.1Si3.3、CuAl2相溶解消失

过饱和固溶Er元素析出

形成与基体共格的Al3Er相粒子

并形成了核壳状Al3（Er

Zr）复合相。

Abstract

A kind of Al-Mg-Si alloy contained Zr and Er element for sheet was prepared.The alloy composition is Al-0.8Mg-1.0Si-0.8Cu-0.2Mn-0.15Zr-0.3Er.As-cast and homogenized microstructure of the alloy prepared was observed by transmission electron microscope（TEM）

X-ray diffraction（XRD）

scanning electron microscope（SEM）

energy dispersive spectrum（EDS）and optical microscope（OM）.Meanwhile

the types and changes of precipitation phase in as-cast and homogenization state were analyzed.The results indicate that with Er and Zr addition in casting ingot

the equiaxed grain in the alloy prepared can be observed

and the second phases mainly existing in casting alloy include Mg2Si、Al1.9CuMg4.1Si3.3、CuAl2、Al4Mn3Si2、primary Al3Er、Al3Zr andβ-Si.After homogenization treatment

the second phase particles are distributed more uniformly

improving microstructure of the alloy

and Mg2Si、Al1.9CuMg4.1Si3.3and CuAl2 phases are fully dissolved into the alloy during homogenizing treatment.There are coherent Al3 Er particles precipitate from supersaturated Er solution

and the Al3（Er

Zr）composite phase with a core-shell structure is formed.