MICROSTRUCTURE EVOLUTION OF A TI/TIB METAL-MATRIX COMPOSITE DURING HIGH-TEMPERATURE DEFORMATION

被引：21
|
作者：
Ozerov, M. S. [1 ]
Klimova, M. V. [1 ]
Stepanov, N. D. [1 ]
Zherebtsov, S. V. [1 ]
机构：
[1] Belgorod State Univ, Lab Bulk Nanostruct Mat, Belgorod, Russia
来源：
MATERIALS PHYSICS AND MECHANICS | 2018年 / 38卷 / 01期
基金：
俄罗斯科学基金会;
关键词：
metal-matrix composite; spark plasma sintering; uniaxial compression; dynamic recrystallization; activation energy; precipitation hardening;
D O I：
10.18720/MPM.3812018_8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A Ti/TiB metal-matrix composite (MMC) was produced by spark plasma sintering using a Ti-10wt.%TiB2 powder mixture at 850 degrees C under a load of 40 MPa for 15 min. The microstructure evolution and mechanical behavior of the Ti/TiB composite during uniaxial compression at the temperature range 500 - 1050 degrees C was studied. The evolution of microstructure of the titanium matrix was associated with the formation of dislocation cells at 500 degrees C, continuous dynamic recrystallization at 700 degrees C and discontinuous dynamic recrystallization at temperatures >= 850 degrees C. The apparent activation energy of the deformation and processing map were analyzed. The contributions of different strengthening mechanisms of the composite were evaluated.
引用
收藏
页码：54 / 63
页数：10
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