Effect of a ductility layer on the tensile strength of TiAl-based multilayer composite sheets prepared by EB-PVD

被引：15

作者：

Zhang, Rubing ^{[1
]}

Zhang, Yaoyao ^{[1
]}

Liu, Qiang ^{[2
]}

Chen, Guiqing ^{[3
]}

Zhang, Deming ^{[4
]}

机构：

[1] Beijing Jiaotong Univ, Sch Civil Engn, Dept Mech, Beijing 100044, Peoples R China

[2] Beijing Inst Astronaut Syst Engn, Beijing 100076, Peoples R China

[3] Harbin Inst Technol, Ctr Composite Mat, Harbin 150001, Peoples R China

[4] Beijing Gen Res Inst Min & Met, Beijing 100044, Peoples R China

来源：

MATERIALS CHARACTERIZATION | 2014年 / 95卷

基金：

中国国家自然科学基金;

关键词：

Vapor deposition; Microstructure; Tensile strength; Scanning electron microscopy; SEM; DENSE THIN-SHEETS; FRACTURE-TOUGHNESS; MICROSTRUCTURE; OXIDATION; BEHAVIOR; MORPHOLOGY;

D O I：

10.1016/j.matchar.2014.06.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

TiAl/Nb and TiAl/NiCoCrAl laminate composite sheets with a thickness of 0.4-0.6 mm and dimensions of 150 mm x 100 mm were successfully fabricated by electron beam physical vapor deposition. The microstructures of the sheets were examined, and their mechanical properties were compared with those of TiAl monolithic sheet produced by electron beam physical vapor deposition. Tensile testing was performed at room temperature and 750 degrees C, and the fracture surfaces were examined by scanning electron microscopy. Among the three microlaminate sheets, the TiAl/NiCoCrAl micro-laminate sheet had the best comprehensive properties at room temperature, and the TiAVNb micro-laminate sheet showed the ideal high-temperature strength and plasticity at 750 degrees C. The result was discussed in terms of metal strengthening mechanism. (C) 2014 Elsevier Inc. All rights reserved.

引用

页码：157 / 163

页数：7

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