【作者】 郭从盛； 龙姝明； 张会；

【Author】 Guo Congsheng Long Shuming Zhang Hui School of Materials Science and Engineering,Shaanxi University of Technology,Hanzhong,Shaanxi, 723003

【机构】 陕西理工学院材料科学与工程学院； 陕西理工学院物理系；

【摘要】 采用物理模拟的方法研究了高速钢裂纹愈合区的组织特点。通过扫描电镜观察发现,在真空加热条件下高速钢裂纹的愈合过程与碳化物的生长有密切关系。碳化物在裂纹区的生长和聚集所产生的"桥接"作用实现了裂纹面之间的冶金结合。分析了碳化物在裂纹区的生长过程。更多还原

【Abstract】 The microstructure characteristics of the crack healing area in W6Mo5Cr4V2 steel were investegated by means of phsyeal simulation.It was found through SEM observation that there is a close relation between the crack healing process and the carbide growth for the high-speed steel under the vacuum heating condition.It is a"bridge"action to realize the metallurgical binding between cracking faces by the growth and the accumulation of carbide in the crack area.The growth process of the carbide in the crack area was analyzed.更多还原