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首页> 外文会议>International Conference on The Mechanical Behavior of Materials; 20070527-31; Busan(KR) >Improvement of Hardness and Wear Resistance of Steel-based Surface Composites Fabricated by High-Energy Electron Beam Irradiation
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Improvement of Hardness and Wear Resistance of Steel-based Surface Composites Fabricated by High-Energy Electron Beam Irradiation

机译：高能电子束辐照改善钢基表面复合材料的硬度和耐磨性

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摘要

The present study is concerned with the improvement of hardness and wear resistance in (Cr_3C_2,CrB)/carbon steel surface composites fabricated by high-energy electron beam irradiation. Two kinds of powder mixtures, 50Cr_3C_2-50STS304 and 50Cr-B-50STS304 (wt.%), were placed on a plain carbon steel substrate, which was then irradiated with electron beam. The surface composite layer of 1.0～1.3 mm in thickness was successfully formed without defects, and contained a large amount (up to 58 vol.%) of Cr_7C_3 or Cr_(1.65)Fe_(0.35)B_(0.9) particles in the austenite or martensite matrix. The hardness and wear resistance of the surface composites were 2～3 times higher than those of the steel substrate according to hard particles. Particularly, the surface composite fabricated with CrB powders showed excellent wear resistance because selective wear of the matrix was considerably reduced.
机译：本研究涉及通过高能电子束辐照制备的（Cr_3C_2，CrB）/碳钢表面复合材料的硬度和耐磨性的提高。将两种粉末混合物（50Cr_3C_2-50STS304和50Cr-B-50STS304（重量％））放在纯碳钢基底上，然后用电子束辐照。成功地形成了厚度为1.0〜1.3mm的表面复合层，且无缺陷，并且在奥氏体或不锈钢中包含了大量（至多58 vol。％）Cr_7C_3或Cr_（1.65）Fe_（0.35）B_（0.9）颗粒。马氏体基体。表面复合材料的硬度和耐磨性是硬质合金的两倍，是钢基复合材料的2-3倍。尤其是，用CrB粉末制成的表面复合材料具有出色的耐磨性，因为大大降低了基体的选择性磨损。

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