期刊论文

Study on Manufacture and Properties of W-Al-B4C Composites

中文

金属材料与冶金工程

2095-5014

2019

47

3

8-13

本校为第一机构

通过粉末冶金法和真空烧结的方式制备了不同钨含量的W-Al-B4C复合材料,采用DM2700Leica金相显微镜和X射线衍射仪(XRD)对复合材料的微观组织及物相进行了观察分析,采用阿基米德排水法测量了W-A1-B4C复合材料的密度,采用MCNP程序对复合材料进行了γ射线屏蔽性能的模拟.结果 表明:不同钨含量的复合材料中钨和碳化硼颗粒都较均匀的分布于铝基体中,彼此结合良好,材料致密,各相之间结合良好,没有出现较大的缺陷;不同钨含量的复合材料的衍射峰基本上相同,无偏移现象,没有发生合金化反应;随着钨含量的增加,复合材料的理论密度在逐渐增加,而实际测量密度随着钨含量的增加呈先增加后逐渐减小的趋势,当钨含...

W-Al-B4C composites with different tungsten contents were prepared by powder metallurgy and vacuum sintering. The microstructure and phase of the composites were observed by DM2700 Leica metallographic microscope and X-ray diffraction ( XRD ). The density of the W-Al- B4C composite was measured by the Archimedes drainage method. The γ-ray shielding properties of the composites were simulated by MCNP program. The results show that the tungsten and boron carbide particles in the composite materials with different tungsten content are evenly dist...