Brittle-to-ductile transition in a Ti-TiB metal-matrix composite

被引：25
作者：
Ozerov, M. [1 ]
Stepanov, N. [1 ]
Kolesnikov, A. [1 ]
Sokolovsky, V. [1 ]
Zherebtsov, S. [1 ]
机构：
[1] Belgorod State Univ, Belgorod, Russia
来源：
MATERIALS LETTERS | 2017年 / 187卷
基金：
俄罗斯科学基金会;
关键词：
Composite materials; Titanium alloy; Interfaces; Nanocrystalline materials; Orientation relationship; MECHANICAL-PROPERTIES; MICROSTRUCTURE;
D O I：
10.1016/j.matlet.2016.10.060
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A Ti-10 wt%TiB metal-matrix composite (MMC) was produced by spark plasma sintering (SPS) at temperatures of 850 or 1000 degrees C corresponding to the a or the beta phase fields of Ti, respectively. In the interval 400-700 C the MMC produced at 1000 degrees C showed higher strength and lower ductility in comparison with the MMC produced at 850 degrees C. The results of the mechanical tests and the fracture surface analysis suggested higher brittle-to-ductile transition temperature of the specimens obtained at 1000 degrees. This phenomenon can be ascribed to different structures of Ti/TiB interfaces formed during SPS above and below the alpha <->beta transition.
引用
收藏
页码：28 / 31
页数：4
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