微量元素对ZTC4显微组织与力学性能影响  

Effect of Trace Element on the Microstructure and Mechanical Properties of As-Cast ZTC4

作　　者：戚运莲[1] 曾立英[1] 侯智敏[1] 赵彬[1] 洪权[1] 毛小南[1] 刘时兵[2] 赵军[2] 谢华生[2] 

机构地区：[1]西北有色金属研究院,陕西西安710016 [2]沈阳铸造研究所,辽宁沈阳110178

出　　处：《铸造》2014年第11期1102-1105,共4页Foundry

基　　金：国家科技支撑计划项目(2007BAE07B02;2007BAE07B01;2007BAE07B03);国家重点基础研究发展计划"973"项目资助(2007CB 613805;2007CB613807)

摘　　要：采用熔铸工艺法制备了含硼量为0.2％～0.5％、碳为0.5％～3.0％、钇为0.1％～0.15％的ZTC4/B/C/Y钛基复合材料,分析并测试了合金的铸态组织和力学性能.研究结果表明：钛硼相提高TC4合金铸棒弹性模量,硼元素添加量为0.5％时,合金弹性模量提高30％;C元素大大提高ZTC4合金铸棒的强度,添加0.5％C元素,其抗拉强度达到1 300 MPa,提高了25％;Y元素的添加,在ZTC4合金铸棒的塑性不明显降低的基础上,改善合金的强度,具有较好的强塑性匹配.In this paper,the ZTC4/B/C/Y titanium matrix composite containing B,C,Y in which B content ranging from 0.2％-0.5％ and C content ranging from 0.5％-3.0％ and Y content ranging from 0.1％-0.15％ was fabricated using melting-casting process.The microstructure and mechanical properties of as-cast ZTC4/B/C/Y titanium matrix composite were studied.The results indicate that elastic modulus of ZTC4/B are 145 GPa and increase 30％ with 0.5％ B; the ultimate tensile strength （UST） of ZTC4/B/C reaches 1 300 MPa and increase 25％ with 0.5％ B and 0.5％ C; by adding Y,the plasticity of ZTC4/B /C/Y is not obviously decreased,the strength was improved,and strength and plasticity match well.

关 键 词：铸造钛合金 微量元素 组织性能 

分 类 号：TG146.23[一般工业技术—材料科学与工程]