采用激光熔化连续沉积工艺制备出了以Cr13Ni5Si2为初生相、以γ-Ni基固溶体为增韧相的金属硅化物耐磨合金, 在室温干滑动磨损条件下测试了Cr13Ni5Si2/γ-Ni合金的耐磨性能并讨论了其磨损机理. 结果表明, 由于Cr13Ni5Si2/γ合金优良的强韧性配合以及在磨损过程中磨损表面上稳定氧化物转移覆盖层的快速形成,合金在室温干滑动磨损条件下具有优异的耐磨性能和很低的载荷敏感系数.
A wear resistant metal silicide alloy consisting of Cr13Ni5Si2 ternary metal silicide dendrites and the interdendritic nickel-base solid solution (γ) was designed and fabricated by the laser melting/continuous deposition process. Wear resistance of the Cr13Ni5Si2/γ alloy was evaluated on an MM-200 block-on-wheel dry sliding wear tester at room temperature. Results indicate that the Cr13Ni5Si2/γ alloy has excellent wear resistance and extremely low load-sensitivity of wear under dry sliding wear test conditions.
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