Impact of Cryogenic Treatment on HCF and FCP Performance of β-Solution Treated Ti-6Al-4V ELI Biomaterial

Materials

VishalS. Sharma¹  AnilKumar Singla²  Jagtar Singh²  MunishKumar Gupta³  Qinghua Song⁴  GrzegorzM. Krolczyk⁵  Dariusz Rozumek⁵ 

[1] Department of Industrial and Production Engineering, Dr B R Ambedkar National Institute of Technology, Jalandhar 144011, Punjab, India;Department of Mechanical Engineering, Sant Longowal Institute of Engineering and Technology, Longowal 148106, Punjab, India;Key Laboratory of High Efficiency and Clean Mechanical Manufacture, Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan 250061, China;National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan 250061, China;Opole University of Technology, 76 Proszkowska St, 45-758 Opole, Poland;

关键词: cryogenic;    fatigue;    titanium alloy;    microstructure;    crack propagation;    fractography;   

DOI  :  10.3390/ma13030500

来源: DOAJ

【 摘 要 】

The poor fatigue strength of Ti-6Al-4V ELI is a main cause of failure in structural implants. In this work, Ti-6Al-4V ELI was subjected to β-solution treatment to obtain martensite microstructure and further subjected to −196 °C for 24 h. Significant improvement in high cycle fatigue performance of martensite Ti-6Al-4V ELI was observed on exposure to cryogenic cycle. Resistance to fatigue crack growth of alloy was augmented in martensite structure as compared with mill annealed sample and the same was retained even after exposure to cryogenic treatment. The variation observed in fatigue behavior due to cryogenic treatment was correlated with fractography and metallurgical investigations. Improvement in high cycle fatigue performance can be attributed to a combined effect of a decrease in the size of prior β grain, formation of massive α patch and its subsequent transformation into ultra-fine α and β during the soaking period at −196 °C.

【 授权许可】

Unknown