High-Strength Al-Zn-Cu-Based Alloy Synthesized by High-Pressure Die-Casting Method

被引：9

作者：

Shin, Sang-Soo ^{[1
]}

Won, Sung-Jae ^{[2
,3
]}

So, Hyeongsub ^{[2
,3
]}

Lee, Sang-Kee ^{[4
]}

Kim, Kyou-Hyun ^{[2
,5
]}

机构：

[1] Oh Sung Co Ltd, R&D Ctr, Shihung 15112, South Korea

[2] Korea Inst Ind Technol, Korea Russia Innovat Ctr, Incheon 22004, South Korea

[3] Korea Univ, Dept Mat Sci & Engn, Seoul 02841, South Korea

[4] Korea Polytec, Dept Adv Mat Applicat, Daegu Campus, Daegu 41765, South Korea

[5] Korea Inst Ind Technol, Korea Inst Rare Met, Mfg Technol Off, Incheon 21999, South Korea

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2020年 / 51卷 / 12期

关键词：

MECHANICAL-PROPERTIES; MICROSTRUCTURE; SYMMETRY;

D O I：

10.1007/s11661-020-06011-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High-strength alloys of Al-xZn-3Cu (x = 20, 30, 40 wt pct) are developed for die-casting process. The maximum tensile strength of the developed alloy is 435 MPa, with a stain to fracture of similar to 4 pct. Microstructural investigation shows that the grain size of alpha-Al gradually decreases and the area of the Zn-rich region increases as the amount of Zn increases. Local symmetry investigation reveals that the major phase of alpha-Al contains very fine nanoprecipitations of Zn phase (<10 nm), with a very small amount of strain along {110}. In addition, the Zn-rich region of the grain boundary has a very complex microstructure. This study discusses the effect of the microstructure of the developed Al alloys on the mechanical properties. (C) The Minerals, Metals & Materials Society and ASM International 2020

引用

页码：6630 / 6639

页数：10

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