复合场与TiB<sub>2</sub>纳米粒子对CuAlMn形状记忆合金组织和性能的影响

金文中; 曹永青; 李林芳

doi:10.15980/j.tzzz.2020.09.005

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复合场与TiB₂纳米粒子对CuAlMn形状记忆合金组织和性能的影响
Effects of Compound Field and TiB₂ Nanoparticles on Solidification Structure and Mechanical Properties of CuAlMn Shape Memory Alloy
2020年40卷第9期页码：950-953
纸质出版日期： 2020 ，
DOI： 10.15980/j.tzzz.2020.09.005

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[1]金文中,曹永青,李林芳.复合场与TiB_2纳米粒子对CuAlMn形状记忆合金组织和性能的影响[J].特种铸造及有色合金,2020,40(09):950-953.

Jin Wenzhong, Cao Yongqing, Li Linfang. Effects of Compound Field and TiB₂ Nanoparticles on Solidification Structure and Mechanical Properties of CuAlMn Shape Memory Alloy[J]. Special Casting & Nonferrous Alloys, 2020,40(9):950-953.
[1]金文中,曹永青,李林芳.复合场与TiB_2纳米粒子对CuAlMn形状记忆合金组织和性能的影响[J].特种铸造及有色合金,2020,40(09):950-953. DOI： 10.15980/j.tzzz.2020.09.005.

Jin Wenzhong, Cao Yongqing, Li Linfang. Effects of Compound Field and TiB₂ Nanoparticles on Solidification Structure and Mechanical Properties of CuAlMn Shape Memory Alloy[J]. Special Casting & Nonferrous Alloys, 2020,40(9):950-953. DOI： 10.15980/j.tzzz.2020.09.005.

摘要

应用功率超声-电磁复合场与TiB

纳米粒子来改善CuAlMn形状记忆合金的组织和性能。使用扫描电镜和光学显微镜研究了复合场与TiB

纳米粒子对CuAlMn形状记忆合金组织和性能的影响。结果表明

功率超声-电磁复合场能够有效抑制TiB

纳米粒子的团聚

提高TiB

纳米粒子的晶粒细化效果。添加1%的TiB

纳米粒子的同时施加功率超声-电磁复合场

可以将CuAlMn形状记忆合金铸锭的晶粒尺寸从1.62mm细化至0.32mm。相应的

CuAlMn形状记忆合金的力学性能得到大幅提高

其中抗拉强度和伸长率分别提高到691MPa和19.7%。

Abstract

The solidification structure and mechanical properties of CuAlMn shape memory alloy were improved with the help of compound field（combination of power ultrasonic field and rotating electromagnetic field）and TiB

nanoparticles.The effects of compound field and TiB

nanoparticles on solidification structure and mechanical properties of CuAlMn shape memory alloy were investigated by SEM and optical microscope.The results show that compound field can effectively inhibit the agglomeration of TiB

nanoparticles

improving the grain refinement effect of TiB

nanoparticles.The grain size of the CuAlMn shape memory alloy ingot can be refined from 1.62 mm to 0.32 mm with adding 1% TiB

nanoparticles and applying compound field simultaneously.Accordingly

the tensile properties of the alloy are significantly improved

where tensile strength and elongation are increased to 691 MPa and 19.7%

respectively.