Effect of pre-sintering on microstructure and properties of cemented carbides sintered by sinter-HIP - 文章详情页

作者：

Song, X.-Y. (Song, X.-Y..) (学者：宋晓艳) | Fu, J. (Fu, J..) | Wei, C.-B. (Wei, C.-B..) | Wang, H.-B. (Wang, H.-B..) | Liu, X.-M. (Liu, X.-M..) (学者：刘小明)

收录：

Scopus PKU CSCD

摘要：

In　the　present　work,　the　in-situ　synthesized　ultrafine　WC-Co　composite　powder　was　pre-sintered　at　1　250,　1　300,　1　350,　and　1　380　°C,　respectively.　Then,　the　pre-sintered　solids　were　sintered　by　the　hot　isostatic　pressing　(sinter-HIP)　at　1　450　°C　for　30　min　in　the　Ar　atmosphere　with　gas　pressure　of　5　MPa.　Microstructures　and　mechanical　properties　of　the　pre-sintered　solid　and　finally　sintered　bulks　were　investigated,　respectively.　Results　show　that　the　pre-sintering　process　can　effectively　control　the　abnormal　grain　growth.　After　pre-sintering　treatment,　the　bulk　materials　prepared　by　sinter-HIP　have　excellent　fracture　toughness,　with　the　maximum　value　of　16.1　MPa·m-1/2.　The　composite　powder　pre-sintered　at　1　350　°C　and　1　380　°C,　sintered　by　HIP,　has　more　homogeneous　microstructure　and　high　transverse　rupture　strength.

关键词：

In-situ reaction; Mechanical properties; Pre-sintering; Sinter-hot isostatic pressing (sinter-HIP); WC-10%Co composite powder

作者机构：

[ 1 ] [Song, X.-Y.]Key Laboratory of Advanced Functional Materials, Education Ministry of China, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Fu, J.]Key Laboratory of Advanced Functional Materials, Education Ministry of China, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Wei, C.-B.]Key Laboratory of Advanced Functional Materials, Education Ministry of China, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Wang, H.-B.]Key Laboratory of Advanced Functional Materials, Education Ministry of China, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Liu, X.-M.]Key Laboratory of Advanced Functional Materials, Education Ministry of China, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China

通讯作者信息：

宋晓艳
[Song, X.-Y.]Key Laboratory of Advanced Functional Materials, Education Ministry of China, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China

电子邮件地址：

xysong@bjut.edu.cn

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