爆炸加载条件下CVD高纯钨的变形机制  

Deformation Mechanism of High Purity Tungsten by CVD Subjected to Explosion Loading

作　　者：周静怡[1] 刘金旭[1] 李树奎[1] 白曦[1] 

机构地区：[1]北京理工大学冲击环境材料技术重点实验室,北京100081

出　　处：《稀有金属材料与工程》2013年第1期80-83,共4页Rare Metal Materials and Engineering

摘　　要：采用化学气相沉积方法制备纯钨药型罩,并进行静破甲试验,对试验后回收的杵体进行微观分析,以此研究纯钨在爆炸驱动下的变形机制。结果表明,杵体内不同区域由于变形量不同,其微观组织特征存在显著差异,通过分析不同变形区域纯钨的微观组织演化过程得出纯钨在爆炸加载条件下的变形机制为动态再结晶,且属于亚晶旋转动态再结晶机制,没有孪晶参与变形,CVD纯钨原始柱状晶的择优取向对其变形机制未见有显著影响。High purity tungsten shaped charge liners （SCL） were prepared by chemical vapor deposition （CVD）. In order to study the deformation mechanism of pure tungsten under explosion loading condition, the pure tungsten SCL were subjected to static penetration experiments. The microstructure features of retrieved slug were systematically investigated. Results show that the different areas of the retrieved slug show obviously different microstructure features due to different plastic deformation. Through analyzing the microstructure evolution of different areas of the retrieved slug, it can be concluded that the deformation mechanism of pure tungsten subjected to explosion loading is subgrain rotation dynamic recrystallization mechanism （RDR）. No twinning deformation was observed. In addition, the original orientation of the CVD columnar grains has no obvious influence on deformation mechanism of pure tungsten under explosion loading conditions.

关 键 词：化学气相沉积钨 变形机制 动态再结晶 爆炸加载 药型罩 

分 类 号：TJ410.33[兵器科学与技术—火炮、自动武器与弹药工程] TG146.411[一般工业技术—材料科学与工程]