QQ客服 官方微博 反馈留言

	Effect of copper content on the microstructures and properties of TiB/sub 2/ based cermets by SHS
	Qiang Xu ; Xinghong Zhang ; Jiecai Han ; Wei Pan
	2010-05-10 ; 2010-05-10
会议名称	Materials Science Forum ; Fifth Pacific Rim International Conference on Advanced Materials and Processing PRICM-5 ; Beijing, China ; INSPEC
关键词	Experimental/ bending strength cermets combustion synthesis copper alloys cracks crystal microstructure ductility fracture toughness hardness hot pressing particle size porosity powder metallurgy titanium alloys/ copper content effect microstructures TiB/sub 2/ based cermets SHS titanium powder boron powder copper powder self-propagating high temperature synthesis pseudo hot isostatic pressing particle size hardness bend strength porosity fracture toughness crack tip plastic blunting ductile metallic phase crack deflection TiB/sub 2/-Cu/ A6480G Microstructure A8120N Preparation of cermets, ceramic and refractory composites A8120E Powder techniques, compaction and sintering A8140N Fatigue, embrittlement, and fracture A6825 Mechanical and acoustical properties of solid surfaces and interfaces A6220M Fatigue, brittleness, fracture, and cracks A8140L Deformation, plasticity and creep A6220F Deformation and plasticity/ TiB2Cu/sur B2/sur Cu/sur Ti/sur B/sur TiB2Cu/ss B2/ss Cu/ss Ti/ss B/ss
中文摘要	TiB/sub 2/ based cermets with different copper content were produced from titanium powder, boron powder and copper powder by self-propagating high-temperature synthesis under conditions of pseudo hot isostatic pressing (SHS/PHIP). In order to obtain the optimal copper content, the effect of copper content on the microstructures and properties of TiB/sub 2/ based cermets was investigated. The size of the TiB/sub 2/ particles in the products decreased with increasing amounts of copper. The hardness (HRA) and bend strength increased firstly, then decreased with copper increasing. Their maximum values appeared at 20 wt.% and 40 wt.% copper, respectively. The porosity of TiB/sub 2/ based cermets decreased with the copper content increasing due to good fluidity of copper. With the addition of copper, the fracture toughness of TiB/sub 2/ based cermets increased gradually. Crack-tip plastic blunting by a ductile metallic phase and crack deflection are the principal mechanisms of toughness improvement of TiB/sub 2/ based cermets. The range of optimal copper content in the TiB/sub 2/ based cermets is between 40 wt.% and 50 wt.%.
会议录出版者	Trans Tech Publications ; Switzerland
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/18509]
专题	清华大学
推荐引用方式 GB/T 7714	Qiang Xu,Xinghong Zhang,Jiecai Han,et al. Effect of copper content on the microstructures and properties of TiB/sub 2/ based cermets by SHS[C]. 见:Materials Science Forum, Fifth Pacific Rim International Conference on Advanced Materials and Processing PRICM-5, Beijing, China, INSPEC.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。