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

共 35 条

[1] Study on the eutectic modification level of Al-7Si Alloy by computer aided recognition of thermal analysis cooling curves
Chen, X
Geng, HY
Li, YX
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 419 (1-2): : 283 - 289
[2] Grain refinement of hypoeutectic Al-Si alloys with B
Chen, Zongning
Kang, Huijun
Fan, Guohua
Li, Jiehua
Lu, Yiping
Jie, Jinchuan
Zhang, Yubo
Li, Tingju
Jian, Xigao
Wang, Tongmin
[J]. ACTA MATERIALIA, 2016, 120 : 168 - 178
[3] Optimal holding temperatures and phosphorus additions for primary silicon refinement in Al-high Si alloys
Dai, H. S.
Liu, X. F.
[J]. MATERIALS SCIENCE AND TECHNOLOGY, 2009, 25 (10) : 1183 - 1188
[4] Refining and modification effects of (Al, Zr, Si)-Al4Sr on Al-7Si-0.5 Mg alloy
Ding, Jinhua
Lu, Cheng
Sun, Yijiao
Cui, Chunxiang
Zhao, Ertuan
[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 2021, 15 : 1604 - 1612
[5] Grain refinement of aluminum alloys: Part I. The nucleant and salute paradigms - A review of the literature
Easton, M
StJohn, D
[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1999, 30 (06): : 1613 - 1623
[6] Influence of scandium on the microstructure and mechanical properties of A319 alloy
Emadi, Daryoush
Rao, A. K. Prasada
Mahfoud, Musbah
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (23): : 6123 - 6132
[7] Grain refining mechanism in the Al/Al-Ti-B system
Fan, Z.
Wang, Y.
Zhang, Y.
Qin, T.
Zhou, X. R.
Thompson, G. E.
Pennycook, T.
Hashimoto, T.
[J]. ACTA MATERIALIA, 2015, 84 : 292 - 304
[8] Effect of bismuth on microstructure of unmodified and Sr-modified Al-7Si-0.4Mg alloys
Farahany, S.
Ourdjini, A.
Idris, M. H.
Thai, L. T.
[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2011, 21 (07) : 1455 - 1464
[9] Production of Al-Ti-C grain refiners with the addition of elemental carbon
Gezer, Berke Turgay
Toptan, Fatih
Daglilar, Sibel
Kerti, Isil
[J]. MATERIALS & DESIGN, 2010, 31 : S30 - S35
[10] Modification of eutectic silicon in Al-Si alloys
Hegde, Sathyapal
Prabhu, K. Narayan
[J]. JOURNAL OF MATERIALS SCIENCE, 2008, 43 (09) : 3009 - 3027

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