title: Porous Ti6Al4V alloys with enhanced normalized fatigue strength for biomedical applications.
abstract: In this paper, porous Ti6Al4V alloys for biomedical applications were fabricated by diffusion bonding of alloy meshes. The compression-compression fatigue behavior was studied. It results that porous Ti6Al4V alloys show enhanced normalized fatigue strength which is in the range of 0.5-0.55 at 10(6)cycles. The porosity has some effect on the absolute S-N curves but minor effect on the normalized S-N curves. The relationship between strain per cycle and number of cycles shows three distinct stages and the value of strain per cycle is constant in stage II. The reasons for the higher normalized fatigue strength of porous Ti6Al4V alloys are discussed based on the fatigue crack initiation and propagation.
authors.affiliation: State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, P.R. China.
authors.forename: Fuping
authors.initials: F
authors.lastname: Li
authors.affiliation: State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, P.R. China.
authors.forename: Jinshan
authors.initials: J
authors.lastname: Li
authors.affiliation: State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, P.R. China. Electronic address: hchkou@nwpu.edu.cn.
authors.forename: Hongchao
authors.initials: H
authors.lastname: Kou
authors.affiliation: State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, P.R. China.
authors.forename: Lian
authors.initials: L
authors.lastname: Zhou
mesh_terms: D000497:Alloys / Q000737:chemistry*; D001672:Biocompatible Materials / Q000737:chemistry; D008422:Materials Testing; D013314:Stress, Mechanical; D014025:Titanium / Q000737:chemistry*
chemical_list: D000497:Alloys; D001672:Biocompatible Materials; C031462:titanium alloy (TiAl6V4); D014025:Titanium
keywords: Diffusion bonding; Fatigue; Normalized fatigue strength; Titanium alloys