2GPa高压处理对铜铝合金显微组织和性能的影响
Effects of High Pressure Treatment on Microstructure and Properties of Cu-Al Alloy at 2 GPa
摘 要
在2GPa高压下将铜铝合金加热到750 ℃后保温10 min, 借助光学显微镜和纳米压痕仪研究了高压处理对铜铝合金显微组织、力学性能及摩擦因数的影响。结果表明: 经2 GPa高压处理后, 铜铝合金的组织得到细化, 分布更加均匀; 其纳米压痕硬度、弹性模量、硬弹比和弹性回复系数分别为3.87 GPa, 13.46 GPa, 0.034和83.68%, 较处理前分别提高了8.71%, 2.75%, 6.25%和35.34%, 但摩擦因数却稍有降低。
纳米压痕
高压处理
力学性能
Cu-Al alloy
nanoindentation
high pressure treatment
mechanical property
Abstract
Cu-Al alloy was treated at 2 GPa and 750 ℃ for 10 minutes, and effects of high pressure treatment on the microstructure, mechanical properties and friction coefficient of Cu-Al alloy were investigated by metallurgical microscope and nanoindenter. The results show that after high pressure treatment at 2 GPa, the microstructure of Cu-Al alloy was refined, and distribution become more uniform. Its nano-hardness, elastic modulus, ratio of hardness and elastic modulus, elastic recovery rate were 3.87 GPa, 113.46 GPa, 0.034 and 83.68%, which were 8.71%, 2.75%, 6.25% and 35.34% higher than those of Cu-Al alloy before 2 GPa pressure treatment, respectively, but friction coefficient slightly decreased.
中图分类号 TG113.25
所属栏目 材料性能及其应用
基金项目
收稿日期 2012/2/14
修改稿日期 2012/10/24
网络出版日期
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备注段文燕(1976-), 女, 河北秦皇岛人, 副教授, 硕士。
引用该论文: DUAN Wen-yan. Effects of High Pressure Treatment on Microstructure and Properties of Cu-Al Alloy at 2 GPa[J]. Materials for mechancial engineering, 2013, 37(2): 43～45
段文燕. 2GPa高压处理对铜铝合金显微组织和性能的影响[J]. 机械工程材料, 2013, 37(2): 43～45
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参考文献
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【3】WANG Z X, LU J B, XI Y J. Effects of quenching under high pressure on crystallization of Cu60Zr20Hf10Ti10 bulk metallic glass[J].Materials Science and Engineering A, 2009, 499(1/2): 192-194.
【4】ZHAO J, LIU L, YANG J R, et al. Effects of high pressure on the microstructure and hardness of a Cu-Zn alloy[J].Rare Metals, 2008, 27(5): 541-544.
【5】齐麦顺.高压处理对铜-铝合金中α+γ2→β相变的影响[J].机械工程材料, 2010, 34(3): 13-14.
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【11】LEYLAND A, MATTHEWS A. On the significance of the H/E ratio in wear control: A nanocomposite coating approach to optimised tribological behaviour[J].Wear, 2000, 246(1/2): 1-11.
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