Study on Fatigue Crack Propagation Behavior of Low Cost Titanium Alloy Ti8LC

被引：0

作者：

Jia Weiju ^{[1
]}

Zeng Weidong

Duan Fengchuan ^{[2
]}

Wang Yan ^{[2
]}

Zhou Yigang

机构：

[1] NW Polytech Univ, Sch Mat Sci & Engn, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

[2] Hong Yuan Aviat Forging & Casting Ind Co, AVIC 1, Sanyuan 713801, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2009年 / 38卷 / 12期

关键词：

low cost titanium alloy; fracture toughness; fatigue crack propagation rate; FRACTURE;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Low-cost titanium alloy Ti8LC was heat treated by duplex annealing. Its tensile properties were tested, and the fatigue crack propagation behavior as well as fatigue fracture mechanism were studied. Results show that the strength of the alloy increases a little but the ductility decreases with the increase of the first annealing temperature. SEM analysis on the fatigue crack propagation was performed, and the analysis results indicate that the fatigue crack propagates in three modes of three regions. The presplitting region was cleavage fracture. In the stationary state growth region, fatigue crack grew ahead in the form of striation mechanism and many second fatigue cracks were observed in the meantime. In the fast-growth region is mainly dimple. The temperature of duplex annealing has little influence on fatigue crack propagation behavior.

引用

页码：2171 / 2174

页数：4

共 11 条

[1]

Kawabe Y, 1999, P 9 WORLD C TIT RUSS, P1275

[2]

LEYENS C, 2005, TITANIUM TITANIUM AL, P343

[3]

[李辉 Li Hui], 2006, [材料工程, Journal of Materials Engineering], P21

[4]

LIU RT, 2002, MECH PROPERTIES MAT, P116

[5]

PANG YH, 1995, RARE METAL MAT ENG, V24, P33

[6] Comparison of the fatigue and fracture of α Plus β and β titanium alloys [J].

Peters, JO ;

Lütjering, G .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2001, 32 (11) :2805-2818

[7]

WANG JY, 1985, AERONAUTICAL TITANIU, P162

[8]

WU H, 2007, RARE METALS LETT, V26, P1

[9] CORRELATIONS BETWEEN FRACTURE SURFACE APPEARANCE AND FRACTURE MECHANICS PARAMETERS FOR STAGE-II FATIGUE CRACK-PROPAGATION IN TI-6AL-4V [J].

YUEN, A ;

HOPKINS, SW ;

LEVERANT, GR ;

RAU, CA .

METALLURGICAL TRANSACTIONS, 1974, 5 (08) :1833-1842

[10]

[赵永庆 Zhao Yongqiang], 2004, [稀有金属, Chinese Journal of Rare Metals], V28, P66

← 1 2 →