摘要
采用环状飞片柱面收缩爆炸方法,研究了FT15高速钢粉末在冲击波作用下,因粉末粒度的差异而引起的颗粒效应:在动态冲击载荷的作用下金属细粉比粗粉吸收的能量多,温度高,致使细粉比粗粉表层更易熔化,熔化量也相对增加。同时发现在FT15高速钢混合粉爆炸烧结后粉末中的大颗粒与小颗粒的变形规律不同。
In this paper, two different sizes of high-speed-steel powders have been mixed and then consolidated dynamically by means of a cylinderical converging explosive method with a ring-shape flyer. It has been found that the behaviors of large powder particles differ from that of small powder partieles. After the passage of shock-wave the energy absorption on small powder particles is much greater than that on large powder particles, so that the small power particles may melt prior to large powder particles.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
1989年第3期213-218,共6页
Journal of University of Science and Technology Beijing
关键词
爆炸烧结
金属粉末
颗粒效应
explosive consolidation, metal powders, particle-size-effect, deformation
