Microstructure And Mechanical Properties Of An Al-Zn-Mg-Cu Alloy Produced By Gravity Casting Process

Archives of Metallurgy and Materials

G. Aoshima¹  S. Saikawa²  S. Ikeno³  K. Komai⁴  K. Morita⁴  N. Sunayama⁴ 

[1] GRADUATE SCHOOL OF SCIENCE AND ENGINEERING FOR EDUCATION, UNIVERSITY OF TOYAMA (UNIVERSITY, TOYAMA-SHI, JAPAN);GRADUATE SCHOOL OF SCIENCE AND ENGINEERING FOR RESEARCH, UNIVERSITY OF TOYAMA (UNIVERSITY, TOYAMA-SHI, JAPAN);HOKURIKU POLYTECHNIC COLLEGE (UNIVERSITY, UOZU-SHI, JAPAN);TANIDA LTD (COMPANY, KANAZAWA-SHI, JAPAN)

关键词: Keywords: Al-Zn-Mg-Cu Alloy;    Casting;    Microstructure;    Mechanical Property;   

DOI  :  10.1515/amm-2015-0221

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

High-strength aluminum alloy are widely used for structural components in aerospace, transportation and racing car applications. The objective of this study is to enhance the strength of the Al-Zn-Mg-Cu alloy used for gravity casting process. All alloys cast into stepped-form sand mold (Sand-mold Casting; SC) and Y-block shaped metal mold(Permanent mold Casting; PC) C and then two –step aged at 398-423 K after solution treated at 743 K for 36 ks. The tensile strength and total elongation of the two-step aged SC alloys were 353-387 MPa and about 0.4% respectively. This low tensile properties of the SC alloys might be caused by remaining of undissolved crystallized phase such as Al2CuM, MgZn2 and Al-Fe-Cu system compounds. However, good tensile properties were obtained from PC alloys, tensile strength and 0.2% proof stress and elongation were 503-537 MPa, 474-519 MPa and 1.3-3.3%.

【 授权许可】

Unknown