碳钢膏剂渗硼后的热处理工艺及性能研究  

The Study on Technology and Property of Heat Treatment Process for Steel after Paste-boronizing

作　　者：廖磊[1] 刘锦云[1] 金应荣[1] 冯悦[1] 孙辉[1] 朱成敬[1] 

机构地区：[1]西华大学材料科学与工程学院,四川成都610039

出　　处：《西华大学学报（自然科学版）》2012年第1期98-101,共4页Journal of Xihua University:Natural Science Edition

摘　　要：利用正交试验法,获得了较佳的碳钢膏剂渗硼工艺及渗剂配方,分别研究了45钢及T10钢膏剂渗硼后不同的热处理工艺对渗硼层及基体组织和性能的影响。实验结果表明:45钢在渗硼后渗层显微硬度均在1 130 HV以上,厚度皆在110μm以上;T10钢渗硼后的渗层厚度均在60μm以上,渗层的显微硬度均在1 360 HV以上;热处理对渗硼层的硬度及厚度没有影响,但对基体组织及性能有明显影响;渗硼后采用淬火及低温回火工艺,可使基体获得回火马氏体组织,从而提高了基体的硬度,减小了基体与渗硼层的硬度差,也提高了基体对渗硼层的支撑作用。The optimal technological parameters and the prescription of the Paste-boronizing for steel is obtained by orthogonal ex- perimental design. The influence of different heat treatment processes after paste-boronizing on the structure and the performance of steel 45 and T10 is investigated. The result shows that the thickness of the boronized-layer is higher than ll01xm and the micro-hardness is higher than ll30HV for steel 45, and the thickness of the boronized-layer is higher than 601xm and the micro-hardness is higher than 1360HV for steel T101 There is no effect on the micro-hardness and the thickness of boronized-layer by the heat treatment, but it can affect the structure and performance of substrate significantly. The tempered-martensite of the substrate can be obtained through the process of quenching and low tempreture tempering after Paste-boronizing, the micro-hardness of the substrate was enhanced, then the difference of the hardness between substrate and boronized-layer was reduced and the sustaining ability of the substrate for boronized- layer was improved.

关 键 词：碳钢 膏剂渗硼 显微硬度 渗硼层 

分 类 号：TG178[金属学及工艺—金属表面处理]