Microstructure and wear resistance of laser clad Ti5Si3/NiTi2 intermetallic composite coating on titanium alloy

被引：114

作者：

Wang, HM ^{[1
]}

Liu, YF ^{[1
]}

机构：

[1] Beijing Univ Aeronaut & Astronaut, Sch Mat Sci & Engn, Lab Laser Mat Proc & Surface Engn, Beijing 100083, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2002年 / 338卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

laser cladding; intermetallic matrix composite coating; Ti5Si3; NiTi2; wear resistance; titanium alloy;

D O I：

10.1016/S0921-5093(02)00076-X

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A wear resistant Ti5Si3/NiTi2 intermetallic composite coating was fabricated on substrate of a titanium alloy BT9 by laser cladding with (wt.%) Ni-30Ti-10Si elemental powder blends. The laser clad intermetallic composite coating has a rapidly solidified fine microstructure consisting of Ti5Si3 primary particles uniformly distributed in the NiTi2 matrix and is metallurgically bonded to the titanium substrate. The laser clad Ti5Si3/NiTi2 intermetallic composite coating has high hardness and excellent wear resistance under dry sliding wear test conditions. The excellent wear resistance of the laser clad Ti5Si3NiTi2 intermetallic composite coating is attributed to the coating's high hardness, strong intermetallic atomic bonding and refined microstructure. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：126 / 132

页数：7

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