| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a β type titanium alloy which achieves a low elastic modulus without using expensive Ta having a high melting point, has a mechanical strength that is equal to or higher than that of a conventional material, and has superior biocompatibility. <P>SOLUTION: The β type titanium alloy includes, by mass%, 10.5 or more but less than 25% Nb, 0.1 to 10% Zr, and one or more of 0.1 to 10% Mo, 0.1 to 8% Cr, 0.1 to 5.8% Mn, 0.1 to 4% Fe, while satisfying the expression of X=Mo+1.25Cr+1.7Mn+2.5Fe: 4 to 10 and the expression of (Nb/3.5)+X: 11 to 13, wherein the symbols of elements in the expressions represent a content (mass%) of each element. The alloy obtains an elastic modulus of 80 GPa or less. <P>COPYRIGHT: (C)2010,JPO&INPIT |
