医用Ti-15Mo-3Nb合金稳定化处理过程中的组织性能  

Microstructure and properties of biomedical Ti-15Mo-3Nb alloy

作　　者：戚玉敏[1,2] 李勇[3] 赵立臣[1] 崔春翔[1,2] 王晶[1] 肖建国[1] 马柏慧[1] 

机构地区：[1]河北工业大学材料科学与工程学院,天津300130 [2]河北省新型功能材料重点实验室,天津300130 [3]神华河北国华沧东发电有限责任公司,河北沧州061113

出　　处：《材料热处理学报》2012年第11期54-57,共4页Transactions of Materials and Heat Treatment

基　　金：河北省应用基础研究计划重点基础研究项目(11965151D);河北省高等学校科学技术研究青年基金项目(2010119);河北工业大学博士启动基金(2008-232)

摘　　要：对医用Ti-15Mo-3Nb合金熔炼、锻造、热处理过程中发生的组织和性能的变化进行的研究。并结合相图与JMatPro-4.0软件的模拟结果来确定再结晶退火温度。结果表明,铸态和锻态下的Ti-15Mo-3Nb医用β钛合金的组织和性能很不稳定,不适合直接用于临床。该合金经再结晶退火或固溶时效处理后,合金组织均被细化,抗压强度提高,且再结晶退火后,该合金的压缩弹性模量为19.4 GPa,与人体密质骨的(17-18.9GPa)最为接近,更能满足其作为植入体对生物力学适应性的要求。Microstructure and properties of Ti-15Mo-3Nb alloy in different treatment conditions were studied.The recrystallization annealing temperature of the alloy was determined according to phase diagrams and the simulation result by JMatPro-4.0 soft.The results show that the microstructure and properties of as-cast and forged Ti-15Mo-3Nb alloy are unstable.The microstructure of the alloy after recrystallization annealing treatment or solution and aging treatment is refined.At the same time,their compressive strength increases greatly.The compressive elastic modulus of the alloy after recrystallization annealing treatment is 19.4 GPa nearly to that（17-18.9 GPa） of human body compact bone,which will make it more satisfactory in biomechanical adaptability as surgery implants.

关 键 词：钛合金 生物医用材料 组织 力学性能 生物稳定性 

分 类 号：TG162.83[金属学及工艺—热处理]