Effect of TiB orientation on four-point bending fatigue properties of TiB-reinforced Ti-3Al-2.5V alloy treated with heat extrusion

被引：12
作者：
Hirai, Hideyuki [1 ]
Kurita, Hiroki [2 ]
Gourdet, Sophie [3 ]
Fujita, Keisuke [1 ]
Nakazawa, Kenta [4 ]
Kikuchi, Shoichi [4 ]
机构：
[1] Shizuoka Univ, Grad Sch Integrated Sci & Technol, Naka Ku, 3-5-1 Johoku, Hamamatsu, Shizuoka 4328561, Japan
[2] Tohoku Univ, Dept Mat Proc, Grad Sch Engn, Aoba Ku, 6-6 Aramakiaoba, Sendai, Miyagi 9808579, Japan
[3] Arian Grp, F-78130 Les Mureaux, France
[4] Shizuoka Univ, Fac Engn, Dept Mech Engn, Naka Ku, 3-5-1 Johoku, Hamamatsu, Shizuoka 4328561, Japan
来源：
ENGINEERING FRACTURE MECHANICS | 2020年 / 238卷
关键词：
Fatigue; Titanium alloy; Titanium boride; Metal composite; Fracture mechanics; HIGH-CYCLE FATIGUE; MECHANICAL-PROPERTIES; CRACK-PROPAGATION; GROWTH-MECHANISM; TITANIUM; MICROSTRUCTURE; COMPOSITES;
D O I：
10.1016/j.engfracmech.2020.107284
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
TiB-reinforced Ti-3Al-2.5V, in which TiB whiskers are oriented parallel to the direction of heat extrusion, was fabricated. To investigate the effects of TiB whisker orientation on fatigue properties in Ti-3Al-2.5V, four-point bending fatigue tests were conducted for plate-type specimens having three different orientations of TiB whiskers. The fatigue limit and fatigue life of Ti-3Al-2.5V having TiB whiskers, which are oriented parallel to the loading direction, were high. This is because the resistances of fatigue crack initiation and propagation were changed with the TiB orientation in Ti-3Al-2.5V. Thus, fatigue properties in the Ti-3Al-2.5V having TiB whiskers depended on TiB orientation.
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页数：10
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