Effects of Heat Treatment on Microstructure and Properties of QBe2, QCr0.5 and QAl9-4 Alloys

Chen Wenge; Luo Qiwen; Shen Hongfang; Zhang Jiankang

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Effects of Heat Treatment on Microstructure and Properties of QBe2, QCr0.5 and QAl9-4 Alloys
Issue 5, Pages: 276-278(2006)
Published： 2006 ，
DOI：

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[1]陈文革,罗启文,沈宏芳,张健康.热处理对QBe2、QCr0.5及QAl9-4组织与性能的影响[J].特种铸造及有色合金,2006(05):276-278+254.

Chen Wenge, Luo Qiwen, Shen Hongfang, et al. Effects of Heat Treatment on Microstructure and Properties of QBe2, QCr0.5 and QAl9-4 Alloys. [J]. Special Casting & Nonferrous Alloys (5):276-278(2006)
[1]陈文革,罗启文,沈宏芳,张健康.热处理对QBe2、QCr0.5及QAl9-4组织与性能的影响[J].特种铸造及有色合金,2006(05):276-278+254. DOI：

Chen Wenge, Luo Qiwen, Shen Hongfang, et al. Effects of Heat Treatment on Microstructure and Properties of QBe2, QCr0.5 and QAl9-4 Alloys. [J]. Special Casting & Nonferrous Alloys (5):276-278(2006) DOI：

摘要

对铍青铜（QBe2）、铬青铜（QCr0.5）及铝青铜（QAl94）等常见的3种铜合金进行了固溶时效强化处理

测试了它们的常规力学性能、金相组织和电性能

并用扫描电镜对其断口形貌进行了分析。结果表明

3种铜合金经热处理后其强度和电性能都有一定程度的提高

其中

QBe2的弹性最好

QCr0.5的电性能最优

QAl94的性能则介于两者之间;断口分析结果表明

QCr0.5合金断口呈典型的韧窝状

QBe2合金断口近似于脆性断裂

QAl94合金断口属于准解理断裂。故在弹性要求不高且电阻要求低的情况下

可用QCr0.5合金代替QBe2

而QAl94合金不适宜用做弹性电工元件。

Abstract

The mechanical properties

microstructure and electric performance as well as their fracture morphologies were investigated by SEM for beryllium bronze （QBe2） and chromium bronze （QCr0.5） and aluminum bronze （QAl9-4） after solid solution treatment. The strength and electric performance of the three heat treated alloys can be improved

in which QBe2 possesses the best elasticity and QCr0.5 has the best electric performance

and the performance of QAl9-4 is located between those of the oher alloys. Fracture morphology shows that QBe2

QCr0.5 and QAl9-4 are ductile fracture

near to brittle fracture and quasi-cleavage fracture

respectively. QBe2 can be substituted for QCr0.5 for elastic electrical components under the conditions of low elasticity and low electric resistance requirement

while QAl9-4 is not suitable for elastic electrical components.