Fatigue life dispersion and thermal dissipation investigations for titanium alloy TC17 in very high cycle regime

被引：34
作者：
Huang, Z. Y. [1 ]
Liu, H. Q. [1 ]
Wang, C. [2 ]
Wang, Q. Y. [1 ,2 ]
机构：
[1] Sichuan Univ, Sch Aeronaut & Astronaut, Chengdu 610064, Peoples R China
[2] Sichuan Univ, Coll Architecture & Environm, Chengdu 610064, Peoples R China
来源：
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2015年 / 38卷 / 11期
关键词：
fatigue dispersion; inelastic deformation; thermal dissipation; titanium alloy; VHCF; BEHAVIOR; LIMIT;
D O I：
10.1111/ffe.12335
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Titanium alloy is widely used in aeronautics engineering applications and undertakes high-frequency fatigue load. Tests are performed to investigate the very high cycle fatigue (VHCF) behaviour of TC17 alloy through ultrasonic fatigue machine at R=0.1. Thermal dissipation of VHCF for the alloy in 20kHz frequency is also studied, and a model is proposed to describe the temperature increment of VHCF in the framework of thermodynamics by estimation of the inelastic thermal dissipation at active sites. Failure probability prediction method is used to evaluate the VHCF dispersion based on the multi-scale method and fatigue thermal dissipation analysis.
引用
收藏
页码：1285 / 1293
页数：9
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