Tem Observation Of Precipitate Structures In Al-Zn-Mg Alloys With Additions Of Cu/Ag

Archives of Metallurgy and Materials

T. Yoshida¹  S. Murakami¹  K. Watanabe²  K. Matsuda³  S. Ikeno⁴ 

[1] AISIN KEIKINZOKU CO., LTD. 12-3 NAGONOE, IMIZU, TOYAMA, 934-8588, JAPAN;GRADUATE SCHOOL OF SCIENCE AND ENGINEERING FOR EDUCATION, UNIVERSITY OF TOYAMA, 3190 GOFUKU, TOYAMA, 930-8555, JAPAN;GRADUATE SCHOOL OF SCIENCE AND ENGINEERING FOR RESEARCH, UNIVERSITY OF TOYAMA, TOYAMA, GOFUKU, TOYAMA, 930-8555, JAPAN;HOKURIKU POLYTECHNIC COLLEGE, 1289-1 KAWABARI, UOZU, TOYAMA, 937-0856, JAPAN

关键词: Keywords: Al-Zn-Mg alloy;    aging;    precipitates;    TEM;    Cu and Ag addition;   

DOI  :  10.1515/amm-2015-0244

学科分类：金属与冶金

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

【 摘 要 】

Al-Zn-Mg alloy has been known as one of the aluminum alloys with the good age-hardening ability and the high strength among commercial aluminum alloys. The mechanical property of the limited ductility, however, is required to further improvement. In this work, three alloys, which were added Cu or Ag into the Al-Zn-Mg alloy, were prepared to compare the effect of the additional elements on the aging behavior. The content of Ag and Cu were 0.2at.% and the same as, respectively. Ag or Cu added alloy showed higher maximum hardness than base alloy. The particle shape and rod shape precipitates were observed in all alloys peak-aged at 423K. According to addition of Ag or Cu, the number density of the precipitates increased higher than that of base alloy.

【 授权许可】

Unknown