用扫描电镜上的EBSD装置研究化学气相沉积法制备的高纯钨的晶体取向,化学气相沉积钨具有{110}<001取向织构;用电子万能试验机和分离式霍普金森杆(SHPB)研究纯钨的准静态(10-3s-1)和动态(2000~5000 s-1)压缩力学性能.并与等轴晶重熔钨进行对比分析,沉积钨的屈服强度由静态时的1350 MPa上升到动态时的2000 MPa以上.是应变率敏感材料,等轴晶纯钨的静动态屈服强度高于柱状晶沉积纯钨,柱状晶沉积纯钨有明显的应变硬化效应.沉积钨柱状晶组织的塑性变形方式除滑移外,还有大量的孪晶产生.
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