首页 | 本学科首页   官方微博 | 高级检索  
     

双管-中心杆爆炸烧结对改进烧结体质量的实验研究
引用本文:付艳恕,孙宇新,王金相,张晓立. 双管-中心杆爆炸烧结对改进烧结体质量的实验研究[J]. 实验力学, 2008, 23(5): 463-468
作者姓名:付艳恕  孙宇新  王金相  张晓立
作者单位:南京理工大学,瞬态物理国家重点实验室,南京,210094
基金项目:国家部委科研项目,教育部高等学校博士学科点专项科研基金 
摘    要:
为了改进单管爆炸烧结装置所得成品诸多缺陷,本实验对烧结装置进行双管设计且添加轴芯的方法,以消除聚心滑移爆轰驱动单管压实过程中常伴随的裂纹及马赫孔现象;同时,由于外管在间隙中飞行所实现的聚能效果使碰撞压力较高,且应力波在双管及轴芯之间的传播、反射使其较之于单管情形而言,烧结体更致密、均匀.最后通过对钨、铜、镍、钴混合金属粉末的烧结体进行分析,其相对密度达98.3%;宏观硬度测试结果表明块体沿径向洛氏硬度非常接近,因而可以推知其强度、密度沿径向分布较为均匀.

关 键 词:爆炸烧结  钨合金  双管  应力波
修稿时间:2008-09-08

Experimental Research on Improving Tungsten Alloy by Bimetallic Tubes-Central Pole Explosive Compaction
FU Yan-shu,SUN Yu-xin,WANG Jing-xiang,ZHANG Xiao-li. Experimental Research on Improving Tungsten Alloy by Bimetallic Tubes-Central Pole Explosive Compaction[J]. Journal of Experimental Mechanics, 2008, 23(5): 463-468
Authors:FU Yan-shu  SUN Yu-xin  WANG Jing-xiang  ZHANG Xiao-li
Affiliation:National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China;National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China;National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China;National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, China
Abstract:
In order to improve defects of single-tube sintering, bimetallic tube compaction equipment was designed with a solid rod along the container central axis. Comparing with the single tube equipment, new design can avoid cracks and Mach Stem occurred often in compaction process due to the convergent slide detonation. Besides, since the external tube has an energy concentrating effect when the detonation wave propagated through the gap, and the propagation and reflection of stress wave between bimetallic tubes and the solid rod, so the impact pressure is severalfold higher, therefore the metallic powders can be compacted much tighter and more uniform along the radial. Sintering powders of tungsten, copper, nickel and cobalt were analyzed. Results show that the relative density has reached 98.3% and HRB hardness along the radial is nearly equal. Based on the relationship between the strength and hardness, it is deduced that both the strength and density along the radial are about uniform.
Keywords:
本文献已被 万方数据 等数据库收录!
点击此处可从《实验力学》浏览原始摘要信息
点击此处可从《实验力学》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号