Effect of the interaction layer on the mechanical properties of Ti-6Al-4V alloy castings

被引：4

作者：

Wu, G. Q. ^{[1
]}

Cheng, X. ^{[1
]}

Sha, W. ^{[2
]}

Cheng, X. J. ^{[1
]}

Zhao, J. Q. ^{[3
]}

Nan, H. ^{[3
]}

机构：

[1] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

[2] Queens Univ Belfast, Sch Planning Architecture & Civil Engn, Belfast BT7 1NN, Antrim, North Ireland

[3] Beijing Inst Aeronaut Mat, Beijing 100095, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2016年 / 175卷

关键词：

Hardness; Optical microscopy; Mechanical testing; Solidification; ALPHA-CASE FORMATION; MICROSTRUCTURE;

D O I：

10.1016/j.matchemphys.2016.03.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The interaction between the face coat material of a mould and the titanium alloy will cause oxygen penetration during the casting and solidification process, resulting in the formation of an alpha-case interaction layer at the metal surface that influences the mechanical properties of the cast components. In this study, the influence of alpha-case thickness and loading positions in a Ti-6Al-4V (Ti64) alloy on metal hardness, impact properties and bending strength was investigated. The results showed that the metal surface alpha-case consisted of many coarse a laths which has a higher hardness than metal matrix. The mechanical properties of the alloy are influenced by the alpha-case. The alloy bending strength was observed to have changed linearly with the thickness of sample. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：125 / 130

页数：6

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