一、引言随着科学技术的不断发展,工程技术人员对其所选用的金属材料各种性能指标的要求越来越全面,越来越精细。金属材料的应力腐蚀开裂敏感性被用来作为选择材料的性能指标之一。因此对应力腐蚀试验的方法也不断得到重视和发展。近二十年来,用恒应变速率法研究应力腐蚀,不断被广大研究应力腐蚀的专家们所接受。特别是近十年来,这种研究方法在世 I. INTRODUCTION With the continuous development of science and technology, engineers and technicians have become more and more comprehensive, more and more sophisticated in their requirements for various performance indexes of metal materials. Stress corrosion cracking resistance of metal materials is used as one of the performance indicators of choice of materials. Therefore, the stress corrosion test methods have also been continuously valued and developed. Nearly two decades, the constant strain rate method of stress corrosion research, continue to be widely accepted by stress corrosion experts. Especially in the past decade, this research method is alive