本文用40种工艺方案,较系统地研究了马氏体等温淬火对残余应力,扭曲变形、残余奥氏体量,综合机械性能,以及尺寸(禾文)定性的影响。试验结果指出,马氏体等温淬火即可显著地降低残余应力和扭曲变形,又可大大提高综合机械性能,并能获得较高的尺寸(禾文)定性,是一项提高精密零件尺寸(禾文)定性的有效措施。 In this paper, the effect of austempering on the residual stress, distortion, residual austenite content, mechanical properties, and the characterization of the size (Wo) were investigated systematically with 40 technological schemes. The results show that the austempering of martensite can significantly reduce the residual stress and distortion, but also greatly improve the overall mechanical properties, and access to a higher size (Wo text) Qualitative, is to improve the precision parts size (Wo Text) qualitative and effective measures.