Ti基金属纤维的制备及其性能  

Preparation and Properties of Ti Based Metal Fibers

作　　者：张树玲[1] 陈炜晔 张佃平[1] 戚泽学 耿桂宏[2] 

机构地区：[1]宁夏大学机械工程学院 [2]北方民族大学材料科学与工程学院 [3]中国人民解放军94213部队

出　　处：《广州化工》2016年第15期46-48,共3页GuangZhou Chemical Industry

基　　金：宁夏大学自然科学基金(No:ZR1411);宁夏大学博士科研启动基金(No:BQD2014019);粉体材料与特种陶瓷重点实验室开放课题(No:1409);宁夏自然科学基金(No:NZ15038);宁夏高等学校项目(No:NGY20140151;NGY2015056);北方民族大学重点科研项目(No:2015KJ15)

摘　　要：采用熔体抽拉法制备了直径20-50μm的Ti基金属纤维。这类纤维直径均匀、表面光洁,最大长度达到20 cm。随后对纤维的结构、热稳定性和力学性能进行了观察和分析。结果分析显示,这类金属纤维不但具有非晶态结构、热稳定性好、在703 K开始晶化;而且,具有优良的力学性能优异,0.2 mm/min的拉伸速率下,室温断裂强度达到2.5 GPa,0.05 mm/min的拉伸速率下断裂强度达到2.7 GPa。Ti based metal fibers with a diameter of about 20 - 50 μm were prepared using melt extraction technology. The surface topography, structure, thermal stability and mechanical properties were investigated and analyzed by SEM, XRD, DSC and tensile test. This kind of Ti based metallic fibers had uniform diameter, smooth surface without pits and their maximum continuous length was up to 20 cm. It was found that this Ti based metal fibers not only had amorphous structure, good thermal stability and also had excellent mechanical performance. The onset crystallization temperature was 703 K with three crystallization exothermie peaks. Their tensile strength reached 2.5 GPa at 0.2 mm/min stretching rate and the rupture strength was as high as 2. 7 GPa at a rate of 0. 05 mm/min.

关 键 词：TI基合金 金属纤维 力学性能 

分 类 号：TG146.23[一般工业技术—材料科学与工程]