Microstructure Evolution and Mechanical Properties of As-Cast Pb-Mg-Al Alloys

被引：6

作者：

Duan, Y. H. ^{[1
]}

Sun, Y. ^{[1
]}

Peng, M. J. ^{[1
]}

Guo, Zh Zh ^{[1
]}

Zhu, P. X. ^{[1
]}

机构：

[1] Kunming Univ Sci & Technol, Fac Mat Sci & Technol, Key Lab Adv Mat Yunnan Prov, Kunming, Yunnan, Peoples R China

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2012年 / 21卷 / 06期

基金：

中国国家自然科学基金;

关键词：

fracture; microstructure; Pb-Mg-Al alloy; strengthening mechanism; CALCIUM; TIN;

D O I：

10.1007/s11665-011-9965-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, two new types of Pb-Mg-Al alloys with high tensile strength and hardness were prepared by casting under the molten salt. The microstructure and morphology of the Pb-Mg-Al alloys were investigated through x-ray diffraction and scanning electron microscope analysis. Mechanical properties of the alloys were compared with those of the pure Pb and its alloys, and the results indicate that the tensile strength and hardness increase, respectively, up to 300 MPa and 156 HB with the 10 wt.% addition of Al. The fractographic examinations indicate that the fracture model of Pb-Mg-Al alloys changes from mixed intergranular-transgranular to the intergranular quasi-cleavage with the increase in Al content.

引用

页码：973 / 976

页数：4

共 18 条

[1] HEAT-CONTENT OF MAGNESIUM-LEAD ALLOYS [J].