Structure and properties of cast binary Ti-Mo alloys.
Structure and properties of a series of binary Ti-Mo alloys with molybdenum contents ranging from 6 to 20 wt% have been investigated. Experimental results indicated that crystal structure and morphology of the cast alloys were sensitive to their molybdenum contents. The hexagonal alpha' phase c.p. Ti exhibited a feather-like morphology. When Mo content was 6 wt%, a fine, acicular martensitic structure of orthorhombic alpha" phase was observed. When Mo content was 7.5 wt%, the entire alloy was dominated by the martensitic alpha" structure. When Mo content was increased to 10 wt% or higher, the retained beta phase became the only dominant phase. Among all Ti-Mo alloys, the alpha" phase Ti-7.5Mo alloy had the lowest hardness. The bending strength of Ti-7.5Mo was similar to that of Ti-15Mo and Ti-13Nb-13Zr, and higher than c.p. Ti by nearly 60%. The bending modulus of the alpha"-dominated Ti-7.5Mo alloy was lower than that of Ti-15Mo by 22%, of Ti-6A1-4V by 47%, of Ti-13Nb-13Zr by 17%, and of c.p. Ti by 40%.
Ho
W F
WF
Department of Materials Science and Engineering, National Cheng-Kung University, Tainan, Taiwan, ROC.
Ju
C P
CP
Lin
J H
JH
D000497:Alloys / Q000737:chemistry*; D000704:Analysis of Variance; D001672:Biocompatible Materials; D018786:Bone Substitutes / Q000737:chemistry*; D003461:Crystallography; D004548:Elasticity; D008422:Materials Testing; D008853:Microscopy; D008982:Molybdenum / Q000737:chemistry*; D019736:Prostheses and Implants; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
D000497:Alloys; D001672:Biocompatible Materials; D018786:Bone Substitutes; D008982:Molybdenum; D014025:Titanium