Microstructure, Thermal Insulation, and High-Temperature Mechanical Properties of Layered Porous High Nb-TiAl Composite Sheets

被引：1

作者：

Jin, Xuchen ^{[1
]}

Ye, Peihao ^{[1
]}

Fang, Wenbin ^{[1
]}

Sun, Wei ^{[2
]}

Suo, Zhuanxia ^{[1
]}

Wei, Boxin ^{[1
]}

Li, Xuewen ^{[3
,4
]}

机构：

[1] Harbin Univ Sci & Technol, Sch Mat Sci & Engn, Harbin 150040, Peoples R China

[2] Xian Jiaotong Liverpool Univ, Dept Elect & Elect Engn, Suzhou 215123, Peoples R China

[3] Nanjing Univ Technol, Key Lab Light Weight Mat, Nanjing 210003, Peoples R China

[4] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China

来源：

JOM | 2021年 / 73卷 / 12期

基金：

中国国家自然科学基金;

关键词：

TITANIUM ALUMINIDE; BEHAVIOR; ALLOY; PHASE;

D O I：

10.1007/s11837-021-04981-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Porous materials can effectively improve the thermal insulation performance of materials. Therefore, this study used pure Ti foil, pure Al powder, and pure Nb powder as raw materials. Layered porous high Nb-TiAl alloys have been prepared by vacuum hot-pressing sintering and multi-step heat treatment (low-temperature heat treatment and high-temperature heat treatment). The materials are composed of alpha(2)-Ti3Al, gamma-TiAl, and Al3Nb. Holes are formed in the Al3Nb layer. The thermal insulation and tensile properties are measured at high temperature. The results show that the thermal insulation performance of the layered porous high Nb-TiAl alloy sheet is better than that of the layered high Nb-TiAl alloy (non-porous) and the traditional TiAl alloy. In this work, the materials achieved a good mechanical property-insulation performance synergy.

引用

页码：3753 / 3760

页数：8

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