钼铬等离子共渗形成表面低合金高速钢及其性能研究  

Performance of Low Alloyed High Speed Steel after Plasma Alloying of MoCr

作　　者：高原[1] 徐晋勇[1] 刘燕萍[1] 王建中[1] 隗小云[1] 徐重[1] 

机构地区：[1]太原理工大学表面工程研究所,山西太原030024

出　　处：《机械工程材料》2005年第12期33-34,67,共3页Materials For Mechanical Engineering

基　　金：国家自然科学基金资助项目(50374050);山西省自然科学基金资助项目(20031050)

摘　　要：在Q235钢表面进行等离子铬钼共渗,随后进行渗碳、深冷处理及低温回火处理,对其表面成分、硬度、摩擦因数进行了分析研究。结果表明:Q235钢表面成分接近冶金高速钢。合金层中的碳化物细小、均匀、弥散,没有粗大的共晶莱氏体组织。经深冷处理的试样表面硬度达到1 600 HV,明显高于未经过深冷处理的合金层表面硬度。经不同深冷处理试样的滑动摩擦因数基本相同,但与未经深冷处理的试样相比,摩擦因数降低大约15%。Plasma alloying of Mo-Cr and heat treatment technology were used for Q235 steel. The contents of alloying elements Cr, Mo, C were obtained on the surface of Q235 steel samples were similar to those of high speed steels. Fine uniformity carbon was formed. Large eutectic ledeburite was not found. After cryogenic treatment, the hardness of the surface was up to 1 600 HV. Friction coefficient of the cryogenic treated samples was reduced by 15% at least.

关 键 词：等离子合金化 冶金高速钢 深冷处理 摩擦因数 

分 类 号：TG156.8[金属学及工艺—热处理]