Sb对Mg<sub>2</sub>Si/Al-Si复合材料的硬度与冲击性能的影响

郭富强

doi:10.15980/j.tzzz.2018.01.004

实用研究 | 浏览量 : 0 下载量: 66 CSCD: 1

导出
分享
收藏
专辑

Sb对Mg₂Si/Al-Si复合材料的硬度与冲击性能的影响
Effects of Sb on the Hardness and Impact Properties of Mg₂Si/Al-Si Composites
2018年38卷第1期页码：14-17
纸质出版日期： 2018 ，
DOI： 10.15980/j.tzzz.2018.01.004

扫描看全文

[1]郭富强.Sb对Mg_2Si/Al-Si复合材料的硬度与冲击性能的影响[J].特种铸造及有色合金,2018,38(01):14-17.

Guo Fuqiang. Effects of Sb on the Hardness and Impact Properties of Mg₂Si/Al-Si Composites[J]. Special Casting & Nonferrous Alloys, 2018,38(1):14-17.
[1]郭富强.Sb对Mg_2Si/Al-Si复合材料的硬度与冲击性能的影响[J].特种铸造及有色合金,2018,38(01):14-17. DOI： 10.15980/j.tzzz.2018.01.004.

Guo Fuqiang. Effects of Sb on the Hardness and Impact Properties of Mg₂Si/Al-Si Composites[J]. Special Casting & Nonferrous Alloys, 2018,38(1):14-17. DOI： 10.15980/j.tzzz.2018.01.004.

摘要

采用原位反应法制备了Mg

Si/Al-Si复合材料

研究了Sb对该复合材料硬度和冲击性能的影响。随着Sb加入量的增加

复合材料的硬度和冲击性能均呈现先增加后减小的趋势。当Sb的加入量为0.4%时

复合材料的硬度（HB）最高

约为91

比未变质时提高了27.3%

复合材料的冲击韧度、屈服能量、失效能量和最大能量也均达到最大

分别为11.4J/cm

、0.24J、11.62J和2.79J。0.4%的Sb变质的复合材料由于初生Mg

Si颗粒细小且弥散分布

延长了裂纹扩展所需路径和时间

增加了裂纹扩展阻力

因而表现出最好的冲击性能。

Abstract

Effects of Sb on the hardness and impact properties of Mg

Si/Al-Si composites fabricated by insitu reaction were analyzed.The results show that the hardness and impact properties of the composites are increased firstly and then decreased with the increase of Sb content.When the addition of Sb reaches up to 0.4%

the composites have a maximum hardness of 91 HB

improved by about 27.3%than that of un-modified composites.In addition

the impact toughness

yield energy

failure energy and maximum energy also reach to the maximum

value of 11.4 J/cm

0.24 J

11.62 Jand 2.79 J

respectively.The composites with 0.4% Sb modified exhibit a good impact properties

which are attributed to the increase of crack propagation path and time to increase the crack propagation resistance accordingly as a result of the smaller size and unifrom distribution of primary Mg

Si particles.