本文根据华东石油学院与国外试验研究结果,介绍了奥氏体不锈钢的拉伸应力—应变行为;综合叙述了冷加工或冷变形对奥氏体不锈钢常温及高温机械性能、疲劳性能与抗腐蚀性能的影响;讨论了压力容器超压处理技术及模拟试验结果;当容器的变形量在4％范围内,其条件屈服限可提高30％以上;最后介绍了超压处理技术在国外的应用情况。 In this paper, according to the results of East China Petroleum Institute and foreign experimental research, the tensile stress-strain behavior of austenitic stainless steel is introduced. The effects of cold working or cold deformation on the mechanical properties, fatigue properties and corrosion resistance of austenitic stainless steel at room temperature and high temperature Influence of pressure vessel overpressure is discussed. The simulation results of pressure vessel overpressure are discussed. When the deformation of vessel is within 4%, the yield yield can be increased by more than 30%. Finally, the application of overpressure technology abroad is introduced.