The effect of heat treatment on mechanical properties of in situ synthesized 7715D titanium matrix composites

被引：17

作者：

Wang, Peipei ^{[1
]}

Wang, Liqiang ^{[1
]}

Lu, Weijie ^{[1
]}

Qin, Jining ^{[1
]}

Chen, Yifei ^{[1
]}

Zhang, Zhiwei ^{[1
]}

Zhang, Di ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2010年 / 527卷 / 16-17期

关键词：

Titanium matrix composite; Reinforcement; Mechanical property; Heat treatment; MICROSTRUCTURE; TEMPERATURE; BEHAVIOR; CREEP; REINFORCEMENTS; DEFORMATION; FRACTURE; ALLOYS; DAMAGE;

D O I：

10.1016/j.msea.2010.03.074

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

7715D titanium matrix composites (TMCs) reinforced with TiB,TiC and La2O3 were in situ synthesized by common casting and hot-forging technology. Two kinds of heat treatments were adopted. Fully lamellar microstructures and equiaxed microstructures were obtained by annealing in beta and alpha + beta phases, respectively. The tensile properties of the composites at both ambient and elevated temperatures and also the creep rupture properties were tested. The TMCs with fully lamellar microstructures show superior comprehensive properties in comparison with those with equiaxed microstructures. Lamellar microstructure retarded the crack propagation which originated from cracked whisker more effectively. The strengthening effect of reinforcements can be given full play for the composites with lamellar microstructures. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：4312 / 4319

页数：8

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