The effect of processing parameters such as hot rolling and heat treatment on microstructure and mechanical properties was investigated for a new 0.27mass% C and Ni, Mo-free low alloy martensitic abrasion resistant st...The effect of processing parameters such as hot rolling and heat treatment on microstructure and mechanical properties was investigated for a new 0.27mass% C and Ni, Mo-free low alloy martensitic abrasion resistant steel. The three-body impact abrasive wear behavior was also analyzed. The results showed that two-step controlled rolling besides quenching at 880 ℃ and tempering at 170 ℃ could result in optimal mechanical property., the Brinell hardness, tensile strength, elongation and --40 ℃ impact toughness were 531, 1530 MPa, 11.8% and 58 J, re- spectively. The microstructure was of fine lath martensite with little retained austenite. Three-body impact abrasive wear results showed that wear mechanism was mainly of plastic deformation fatigue when the impact energy was 2 J, and the relative wear resistance was 1.04 times higher than that of the same grade compared steel under the same working condition. The optimal hardness and toughness match was the main reason of higher wear resistance.展开更多
本文对新研制的70Cr2SiMnMoVTiRE 低合金耐磨钢和高锰钢在冲击磨料磨损条件下的磨损行为进行了研究;借助 X 射线衍射仪、扫描电镜(SEM)、透射电镜(TEM)等手段,对试验钢的最佳耐磨组织、钢中残留奥氏体,以及冲击功和配对材料硬度等参数...本文对新研制的70Cr2SiMnMoVTiRE 低合金耐磨钢和高锰钢在冲击磨料磨损条件下的磨损行为进行了研究;借助 X 射线衍射仪、扫描电镜(SEM)、透射电镜(TEM)等手段,对试验钢的最佳耐磨组织、钢中残留奥氏体,以及冲击功和配对材料硬度等参数对磨损性能的影响,进行了较细致的分析和讨论,对冲击磨料磨损机理也作了相应的探讨.展开更多
基金Item Sponsored by National Basic Research Program of China(2010CB630801)
文摘The effect of processing parameters such as hot rolling and heat treatment on microstructure and mechanical properties was investigated for a new 0.27mass% C and Ni, Mo-free low alloy martensitic abrasion resistant steel. The three-body impact abrasive wear behavior was also analyzed. The results showed that two-step controlled rolling besides quenching at 880 ℃ and tempering at 170 ℃ could result in optimal mechanical property., the Brinell hardness, tensile strength, elongation and --40 ℃ impact toughness were 531, 1530 MPa, 11.8% and 58 J, re- spectively. The microstructure was of fine lath martensite with little retained austenite. Three-body impact abrasive wear results showed that wear mechanism was mainly of plastic deformation fatigue when the impact energy was 2 J, and the relative wear resistance was 1.04 times higher than that of the same grade compared steel under the same working condition. The optimal hardness and toughness match was the main reason of higher wear resistance.
文摘本文对新研制的70Cr2SiMnMoVTiRE 低合金耐磨钢和高锰钢在冲击磨料磨损条件下的磨损行为进行了研究;借助 X 射线衍射仪、扫描电镜(SEM)、透射电镜(TEM)等手段,对试验钢的最佳耐磨组织、钢中残留奥氏体,以及冲击功和配对材料硬度等参数对磨损性能的影响,进行了较细致的分析和讨论,对冲击磨料磨损机理也作了相应的探讨.
