Effect of heat treatment on mechanical properties of cast Ti-7.5Mo alloy

• Main Authors: Shih-TeYang, 楊士德
• Other Authors: Jiin-Huey Chern Lin
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/10528413845439365599

碩士 === 國立成功大學 === 材料科學及工程學系碩博士班 === 98 === The effect of heat treatment on the properties of as-cast alloy Ti-7.5Mo discussed in this study. Two sets of experiment were carried out in terms of aging temperature and aging time. First, three aging temperatures(T1℃、T2℃、T3℃)were tested , each with four aging times(t1、t2、t3、t4). Second, an aging time of 30mins was tested with 6 aging temperatures(T1℃、T4℃、T2℃、T5℃、T3℃、T6℃).It was found that the condition of aging temperature at T2℃ for t2 gave the best mechanical properties with yielding strength 927MPa and elongation 12%. For bio-implant applications, low modulus is desirable for avoiding stress shielding effect, in this study, the as-cast Ti-7.5Mo alloy has the lowest modulus than other heat treatment condition, which value is 86GPa, and aging temperature at T1℃ for t6 has the highest one, the value is 132GPa, the difference of the value is 53.5% of the lowest one.