Grain refinement and modification of an Al-Si-Mg-Ti-Be cast alloy: microstructure and tensile property

被引：1

作者：

Zhu, Xiaoping ^{[1
]}

Wang, Yasong ^{[2
]}

Wu, Hailong ^{[3
,4
]}

Xie, Lunjie ^{[2
]}

Liu, Xinwang ^{[2
]}

Fan, Zitian ^{[2
]}

Lue, Shulin ^{[2
]}

Wang, Kai ^{[3
,4
]}

Wang, Zidong ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Beijing, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan, Peoples R China

[3] Dekai Intelligent Casting Co Ltd, Zhuozhou, Peoples R China

[4] China Iron & Steel Res Inst Grp, Beijing, Peoples R China

来源：

FERROELECTRICS | 2022年 / 601卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Al-Si-Mg-Ti-Be alloy; grain refinement; modification; tensile property; MECHANICAL-PROPERTIES; MODIFICATION PERFORMANCE; ALUMINUM-ALLOYS; AL-7SI ALLOY; SILICON; SR; BEHAVIOR;

D O I：

10.1080/00150193.2022.2130784

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, the combined use of grain refinement and modification was studied on a hypoeutectic Al-Si-Mg-Ti-Be cast alloy. The primary alpha-Al grains were transformed from columnar dendrites in the as-received alloy into fine equiaxed dendrites. Meanwhile, the eutectic Si with irregular morphologies were modified to fine fibrous. The room-temperature ultimate tensile strength is increased by similar to 14% from 145 MPa to 165 MPa, while the elongation to fracture is increased from 3% to 5%. The comprehensive enhancement of mechanical properties is due to the synergistic effect of microstructural refinement and isotropic improvement by alpha-Al grain refinement and eutectic Si modification.

引用

页码：194 / 204

页数：11

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