摘要
研究了反应球磨方法制备的ＮｉＡｌ－ＴｉＣ复合材料的组织和力学性能．结果表明，强化相呈两态分布．１０００℃长期退火对材料的组织和显微硬度影响不大．ＮｉＡｌ－ＴｉＣ复合材料的强度远高于铸态ＮｉＡｌ的强度，也比ＸＤＮｉＡｌ－ＴｉＢ２复合材料的强度高．高温热等静压后，该复合材料的室温和高温屈服强度都明显下降．材料的高温强度依赖于应变速率。
Microstructure and mechanical properties
of mechanically alloyed NiAl-TiC composite have been investigated. The results show
reinforced TiC particle is bimodally distributed. Microstructure and microhardness of NiAl-TiC
composite have no significant change after annealed at 1000℃ for a long time.The strength of
NiAl-TiC composite is higher than these of and extruded NiAl as well as XD NiAl-TiB 2
composite. Yield stresses at both RT and high temperature drop obviously after HIP. Strength at
high temperature is dependant on strain rate,and deformation is controlled by diffusion
mechanism.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第1期89-92,共4页
Acta Metallurgica Sinica
基金
国家863计划资助项目
国家自然科学基金
关键词
NIAL
复合材料
力学性能
机械合金化
碳化钛
intermetallics, NiAl based composite, microstructure and mechanical
property
