阻燃钛合金Ti40的热物理性能及力学性能  

Thermo-physical Properties and Mechanical Properties of Burn-resistant Titanium Alloy Ti40

作　　者：赖运金[1,2] 张平祥[1,3] 张赛飞[1] 王凯旋[2] 雷强[2] 辛社伟[3] 郑永健[1] 谭启明[2] 

机构地区：[1]西北工业大学凝固技术国家重点实验室,西安710072 [2]西部超导材料科技股份有限公司特种钛合金材料制备技术国家地方联合工程实验室,西安710018 [3]西北有色金属研究院,西安710016

出　　处：《航空材料学报》2017年第5期22-28,共7页Journal of Aeronautical Materials

基　　金：国家自然科学基金(51504037);国际科技合作专项(2013DFB50180);陕西省重大科技成果转化引导专项(2015KTCG01-11)

摘　　要：作为一种功能性钛合金,Ti40阻燃钛合金的热物理性能数据首次被报道。采用真空自耗电弧熔炼技术制备的Ti40合金铸锭成分均匀,利用热挤压开坯+包套保护锻造方法制备的板坯组织均匀。性能测试结果表明:Ti40合金的室温抗拉强度为950 MPa级,且在500℃下具有良好的热暴露性能、高温蠕变性能和高温持久性能。在室温到600℃范围内,合金的杨氏模量和剪切模量随着温度的升高呈线性下降,泊松比随着温度升高而缓慢增加;线性热膨胀曲线随着温度升高呈抛物线增加,平均线膨胀系数随着温度的升高呈线性增加。As a functional material of burn-resistant titanium alloy, the physical properties of Ti40 alloy were first reported. The chemical compositions of Ti40 alloy ingots by VAR were uniform. The microstructures of Ti40 alloy slab manufactured by HEFF ＋ WPF were uniform. The results show that the room temperature tensile strength of Ti40 alloy is 950 MPa degree. The properties of high temperature heat exposure, creep resistance and lasting time are good at 500 ℃ . In the range from room temperature to 600 ℃, Young, s modulus and shear modulus are decreased linearly with increasing the temperature, Poisson,s ratio is increases slowly as the temperature rises ,and linear thermal expansion coefficient and average linear expansion coefficient is increase as the temperature rises.

关 键 词：阻燃钛合金 TI40合金 热物理性能 板坯 力学性能 

分 类 号：TG146.23[一般工业技术—材料科学与工程]