Three-dimensional reconstruction of bifilm defects

被引：17

作者：

Song, Heqian ^{[1
,2
]}

Zhang, Lunyong ^{[1
,2
]}

Cao, Fuyang ^{[1
,2
]}

Shen, Hongxian ^{[1
,2
]}

Ning, Zhiliang ^{[1
,2
]}

Huang, Yongjiang ^{[1
,2
]}

Zhao, Xinyi ^{[3
]}

Gu, Xu ^{[1
,2
]}

Qiu, Ziao ^{[1
,2
]}

Sun, Jianfei ^{[1
,2
]}

机构：

[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

[2] Harbin Inst Technol, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Peoples R China

[3] Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212000, Jiangsu, Peoples R China

来源：

SCRIPTA MATERIALIA | 2021年 / 191卷

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Nickel-aluminium bronze; Computer tomography; Bifilm separation; OXIDE-FILM DEFECTS; REDUCED PRESSURE TEST; NICKEL-ALUMINUM BRONZE; MECHANICAL-PROPERTIES; MICROSTRUCTURAL DEVELOPMENT; CAST; CORROSION; ENTRAINMENT; HYDROGEN; POROSITY;

D O I：

10.1016/j.scriptamat.2020.09.040

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Bifilm defects have been proposed to be critical for the generation of various metallurgical defects in castings and have been reported to exist in various composition-based alloys. However, the geometry structure of bifilm defects has not yet been well understood. This present work reconstructed the bifilm defects in a nickel-aluminium bronze alloy casting in three-dimensional (3D) space through the use of computer tomography technology. It was shown that the shape of the bifilm defects is very complex and different from a spherical defect in 3D space. The bifilm defects were experimentally extracted successfully by an electrolysis method and were imaged, which confirmed the folded double-layer structure of the bifilm defects. These results will shed new light on the understanding of bifilm defects and improve the defect control engineering of castings. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：179 / 184

页数：6

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