Effects of Er、Zr and B on Microstructure and Properties of Heat-Resistance Conductive Aluminum Alloy

Hou Yachen; Yang Sheng; Cai Bin; Lai Cunming

doi:10.15980/j.tzzz.2017.05.025

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Effects of Er、Zr and B on Microstructure and Properties of Heat-Resistance Conductive Aluminum Alloy
Vol. 37, Issue 5, Pages: 550-553(2017)
Published： 2017 ，
DOI： 10.15980/j.tzzz.2017.05.025

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[1]侯雅尘,杨昇,蔡彬,赖存明.Er、Zr、B对耐热导电铝合金组织和性能的影响[J].特种铸造及有色合金,2017,37(05):550-553.

Hou Yachen, Yang Sheng, Cai Bin, et al. Effects of Er、Zr and B on Microstructure and Properties of Heat-Resistance Conductive Aluminum Alloy. [J]. Special Casting & Nonferrous Alloys 37(5):550-553(2017)
[1]侯雅尘,杨昇,蔡彬,赖存明.Er、Zr、B对耐热导电铝合金组织和性能的影响[J].特种铸造及有色合金,2017,37(05):550-553. DOI： 10.15980/j.tzzz.2017.05.025.

Hou Yachen, Yang Sheng, Cai Bin, et al. Effects of Er、Zr and B on Microstructure and Properties of Heat-Resistance Conductive Aluminum Alloy. [J]. Special Casting & Nonferrous Alloys 37(5):550-553(2017) DOI： 10.15980/j.tzzz.2017.05.025.

摘要

研究了Er、Zr、B元素对耐热导电铝合金微观组织、耐热性和导电性能的影响。结果表明

Er与Al形成的共晶第二相Al

阻碍了晶界迁移和晶粒的长大

延缓再结晶现象的出现

因而合金的耐热性能有一定提升;B的加入使合金中的Zr由固溶态转变为析出态

以细小的板片状第二相粒子的形态存在于晶粒内部和晶界处

减少晶格畸变

改善基体的有序性

提升合金的导电性能。

Abstract

Influences of Er

B and Zr addition on micro-structure and heat-resistance of the aluminum alloy were investiagted.The results reveal that addition of Er can generate secondary phase Al

Er with Al to restrict migration of grain boundaries and grain growth and delay the recrystallization

which are responsible for improving the hear resistance of the alloy.B can transform the Zr from a solid solution state to a precipitation state in form of tiny and plate-like ZrB

existing in grain and grain boundaries to decrease lattice distortion and improve the matrix ordering.Thus

the electric conductivity of the Al alloy is enhanced.