35钢表面增压喷丸纳米化对气体软氮化的影响  

Influence of Nano-crystallization by Surface Strengthens Pressure Shot Penning on Gas Soft-nitriding of 35 Steel

作　　者：陈磊[1] 揭晓华[1] 于能 郑向新 

机构地区：[1]广东工业大学材料与能源学院,广东广州510006 [2]广东巨轮模具股份有限公司,广东揭阳515500

出　　处：《热加工工艺》2009年第22期130-132,共3页Hot Working Technology

基　　金：广东省教育部产学研结合资助项目(2008B090500084)

摘　　要：通过表面增压喷丸处理,在35钢表面形成了厚40μm的纳米晶层,对具有纳米晶层的试样进行气体软氮化。采用透射电镜﹑扫描电镜﹑X射线衍射仪等对35钢表面纳米晶组织及其软氮化渗层组织进行了观察与分析,并测试了渗层硬度。结果表明:经过增压喷丸处理的试样,化合物层厚度大约为原始试样的2倍,软氮化时间可由10 h缩短为3 h;渗层硬度也有明显的提高。The nano-crystalline layer with the thickness 40 μm was formed on the surface of 35 steel by means of surface strengthens pressure shot penning. The samples were then gas soft-nitfiding. The microstructure and performance of the sofl-nitriding layers surfaces were analysed by TEM, SEM, XRD and microhardness was also tested. The results show that the compound layer of the strengthens pressure shot penning sample is about 2 times thicker than the original sample, the nitriding treatment time reduces to 3 hours from 10 hours. Hardness is also improved.

关 键 词：增压喷丸 表面纳米化 35钢 气体软氮化 

分 类 号：TG156.8[金属学及工艺—热处理]