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40Cr厚向性能差异化钢板的组织与性能

DOI: 10.3969/j.issn.1005-3026.2015.02.011, PP. 204-207

Keywords: 性能差异化,瞬时淬火,微观组织,力学性能,耐磨性

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Abstract:

通常情况下耐磨钢板磨损到一定程度即报废,因此耐磨钢板厚度方向上不必全为淬硬层,而现有耐磨钢板热处理都是以全尺寸淬透为目标.针对此问题,提出采用瞬时淬火工艺制备厚向性能差异化钢板.实验选用厚度为30mm的40Cr钢板,处理后其表层为针状马氏体和板条马氏体混合组织,过渡层由板条马氏体和贝氏体混合组织逐渐过渡为珠光体和铁素体混合组织,表面硬度710HV,淬硬层深度9mm,过渡层深度5mm.试制的40Cr厚向性能差异化钢板具有良好的冲击韧性和耐磨性,为机械工程行业需要的“表硬里韧”钢板提供了一种新的选择.

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