Microstructure and mechanical behaviors of in situ TiC particulates reinforced Ni matrix composites

被引：68

作者：

Liu, Zong-de ^{[1
]}

Tian, Juan ^{[1
]}

Li, Bin ^{[1
]}

Zhao, Li-ping ^{[1
]}

机构：

[1] N China Elect Power Univ, Key Lab Condit Monitoring & Control Power Plant E, Minist Educ, Beijing 102206, Peoples R China

来源：

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

基金：

中国国家自然科学基金;

关键词：

In situ TiC particles reinforced Ni matrix composites; Medium frequency induction melting-casting; Microstructure; Mechanical properties; HIGH-TEMPERATURE SYNTHESIS; COMBUSTION SYNTHESIS; MO SYSTEM; DENSIFICATION; NICKEL;

D O I：

10.1016/j.msea.2010.02.061

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In situ synthesis of 20 vol% TiC-Ni composites using the medium frequency induction melting-casting technology was investigated. The final product was composed of TiC and Ni. As the only second phase, TiC particles were homogeneously distributed in the matrix with two kinds of morphologies, i.e. large cubic and fine fibrous. It is identified that the cubic TiC is a primary phase, while the fibrous is a eutectic phase. During the reaction process. Ni was served as diluents, Ti and C as reactants and TiC as a product. The results show it is feasible to in situ form TiC in the molten Ni. The product exhibits relatively high hardness (450 HV0.5. 41.5HRC), moderate yield strength (sigma(0.2) 385 +/- 3 MPa), and high ultimate tensile strength (sigma(b) 591 +/- 5 MPa), as well as good transverse flexural strength (1362 12 MPa). (C) 2010 Elsevier BM. All rights reserved.

引用

页码：3898 / 3903

页数：6

共 17 条

[1] TiC nucleation/growth processes during SHS reactions [J].