2738 ショットピーニングによる高純度クロム合金の表面改質(S24-2 塑性加工(2),S24 塑性加工の動向とその展開)

概要

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In order to improve the surface characteristics of high-purity chromium alloy, surface modification by shot peening was investigated. Shot peening is a mechanical surface treatment widely used in automotive industry. In the experiment, a compressed air-type shot peening apparatus with a heating furnace was produced experimentally. The investigated alloys were prepared from Cr-Ni powder mixtures containing 50% and 80% of chromium in mass. They were formed by a particular sequence of cold and hot isostatic pressing. The used chromium undergoes large plastic deformation near the surface due to the collision of many shots. The treatments consisting of shot peening and annealing operations were also carried out. It was found that the thermal treatments were effective for improving surface characteristics.
一般社団法人日本機械学会の論文
2007-09-07