热处理工艺和充氢对GCr15SiMoAl轴承钢压缩性能的影响
发布时间：2018-12-15 09:05
【摘要】：经成分优化获得一种新型的贝氏体轴承钢GCr15SiMoAl,通过盐浴等温淬火不同时间及油淬工艺获得不同的组织,利用Gleeble3500研究了试验用钢充氢前后的压缩变形行为,并与常规的GCr15轴承钢进行了对比。结果表明,GCr15SiMoAl轴承钢经0.5h等温获得了贝氏体铁素体、残留奥氏体及马氏体的复合组织,其综合压缩性能最好;随着盐浴等温时间的延长,抗压强度逐渐降低,相对压缩率先升高后降低。且GCr15SiMoAl轴承钢在所有工艺下获得的性能均优于传统的GCr15轴承钢。氢对轴承钢的抗压强度影响较小,但是由于氢会促进残留奥氏体发生应变诱发马氏体转变,严重降低了轴承钢的塑性。
[Abstract]:A new type of bainitic bearing steel GCr15SiMoAl, was obtained by optimizing its composition. Different structures were obtained by salt bath isothermal quenching at different time and oil quenching process. The compressive deformation behavior of experimental steel before and after hydrogen filling was studied by Gleeble3500. And compared with conventional GCr15 bearing steel. The results show that the bainite ferrite, retained austenite and martensite composite structure are obtained by isothermal isotherm of GCr15SiMoAl bearing steel for 0.5 h, and its comprehensive compression properties are the best. With the prolongation of the isothermal time of salt bath, the compressive strength decreases gradually, and the relative compression increases first and then decreases. The performance of GCr15SiMoAl bearing steel is better than that of traditional GCr15 bearing steel. Hydrogen has little effect on the compressive strength of bearing steel, but the plasticity of bearing steel is seriously reduced because hydrogen can promote the strain induced martensite transformation of residual austenite.
【作者单位】： 燕山大学亚稳材料制备技术与科学国家重点实验室;洛阳LYC轴承有限公司;
【基金】：国家高技术研究发展计划资助项目(“863”计划,2012AA03A504) 河北省高等学校科学技术研究项目(QN2015100) 燕山大学青年教师自主研究计划项目(15LGB006)
【分类号】：TG142.1;TG161
，
本文编号：2380382
[Abstract]:A new type of bainitic bearing steel GCr15SiMoAl, was obtained by optimizing its composition. Different structures were obtained by salt bath isothermal quenching at different time and oil quenching process. The compressive deformation behavior of experimental steel before and after hydrogen filling was studied by Gleeble3500. And compared with conventional GCr15 bearing steel. The results show that the bainite ferrite, retained austenite and martensite composite structure are obtained by isothermal isotherm of GCr15SiMoAl bearing steel for 0.5 h, and its comprehensive compression properties are the best. With the prolongation of the isothermal time of salt bath, the compressive strength decreases gradually, and the relative compression increases first and then decreases. The performance of GCr15SiMoAl bearing steel is better than that of traditional GCr15 bearing steel. Hydrogen has little effect on the compressive strength of bearing steel, but the plasticity of bearing steel is seriously reduced because hydrogen can promote the strain induced martensite transformation of residual austenite.
【作者单位】： 燕山大学亚稳材料制备技术与科学国家重点实验室;洛阳LYC轴承有限公司;
【基金】：国家高技术研究发展计划资助项目(“863”计划,2012AA03A504) 河北省高等学校科学技术研究项目(QN2015100) 燕山大学青年教师自主研究计划项目(15LGB006)
【分类号】：TG142.1;TG161
，
本文编号：2380382
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