The characterization of porosity and its relationship with externally solidified crystal in a high-pressure die-cast AlSi10MnMg alloy via a laboratory CT technique

被引：10

作者：

Jiao, X. Y. ^{[1
,2
]}

Zhang, W. ^{[3
]}

Liu, Y. X. ^{[4
]}

Wang, J. ^{[5
]}

Liu, W. N. ^{[4
]}

Wan, A. X. ^{[4
]}

Hu, Y. Y. ^{[4
]}

Tong, G. D. ^{[3
]}

Xiong, S. M. ^{[4
]}

机构：

[1] Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China

[2] Northeastern Univ, Key Lab Lightweight Struct Mat, Shenyang 110819, Liaoning, Peoples R China

[3] CHINA FAW Grp CO LTD, Changchun 130000, Peoples R China

[4] Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China

[5] Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China

来源：

MATERIALS LETTERS | 2023年 / 335卷

基金：

中国国家自然科学基金;

关键词：

Die cast; Porosity; Externally solidified crystal;

D O I：

10.1016/j.matlet.2022.133807

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The characterization of porosity and its relationship with externally solidified crystal (ESC) in a high-pressure die-cast AlSi10MnMg alloy is investigated using a laboratory CT technique. Results show that in the bar sam-ple, pores with a high sphericity exhibit a radial distribution under a higher fast shot speed. The appropriate decrease of fast shot speed reduces the porosity but increases the proportion of irregular shrinkage. Without applying intensification pressure, the porosity is rapidly increased and further decreasing fast shot speed, large-size pores are formed in ESC interdendritic gap. In sheet sample, the decrease of fast shot speed increases the porosity and promotes the formation of large-size shrinkage and it is related to the enrichment of ESC.

引用

页数：5