Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

您目前所在的位置:首页 - 期刊简介 - 详细页面

中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第27卷    第12期    总第225期    2017年12月

[PDF全文下载]    [Flash在线阅读]    

    

文章编号:1004-0609(2017)-12-2511-07
W/Si复合材料的制备及抗激光冲击性能
陈泓谕1,罗来马1, 2,林锦山1,昝 祥1, 2,朱晓勇1, 2,吴玉程1, 2

(1. 合肥工业大学 材料科学与工程学院,合肥 230009; 2. 安徽省有色金属材料与加工工程实验室,合肥 230009)

摘 要: 采用机械合金化和放电等离子体烧结(1700 ℃,44.1 MPa)的方法成功制备W/Si复合材料,并通过SEM、EDS、XRD等分析手段以及显微硬度测试和激光热冲击试验对其组织结构、显微硬度及抗热冲击性能进行研究。结果表明:烧结后试样随Si含量的增加依次生成W5Si3和Si2W中间相,该结果与W-Si二元相图完全吻合。激光冲击后试样表面呈现出3种不同形貌:熔融区、影响区及未影响区(边缘区)。相较于其他试样,W/5%Si(质量分数)复合材料的晶粒小、硬度高,具有较好的抗热冲击性能。

 

关键词: W/Si复合材料;放点等离子烧结;抗激光冲击性能

Preparation and laser shock resistance of W/Si composites
CHEN Hong-yu1, LUO Lai-ma1, 2, LIN Jin-shan1, ZAN Xiang1, 2, ZHU Xiao-yong1, 2, WU Yu-cheng1, 2

1. School of Material Science and Engineering, Hefei University of Technology, Hefei 230009, China; 2. Laboratories of Nonferrous Metal Material and Processing Engineering of Anhui Province, Hefei 230009, China

Abstract:W/Si composites were produced through powder metallurgy and subsequent spark plasma sintering (SPS) at 1700 ℃ and 44.1 MPa. SEM, EDS, XRD analysis, microhardness and laser thermal shock tests were used to characterize these microstructure and properties of W/Si composites. The results show that W5Si3 and Si2W phases generate in sequence with the increase of Si element, which corresponds well with the binary phase diagram of W-Si. The laser irradiated surfaces are roughly divided into three parts: the melting region (the center), unaffected region (the edges), and the affected area (between the two regions). Comparing with different samples, W/5%Si (mass fraction) samples seem to possess the relatively better thermal shock resistance due to the smaller grain size and higher microhardness.

 

Key words: W/Si composite; spark plasma sintering; laser shock resistance

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

主管:中国科学技术协会 主办:中国有色金属学会 承办:中南大学
湘ICP备09001153号 版权所有:《中国有色金属学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市岳麓山中南大学内 邮编:410083
电 话:0731-88876765,88877197,88830410   传真:0731-88877197   电子邮箱:f_ysxb@163.com