【摘要】 对无镍奥氏体不锈钢经塑性变形后自由表面微观形态变化以及对耐腐蚀性能的影响进行了观察分析。结果表明随着压缩应变量的增加,各晶粒变形不均匀性加剧,试样表面形成的褶皱增大,原本平整的表面逐渐变成粗糙表面,茶碱对试样无腐蚀作用,而生理盐水对变形试样起应力腐蚀作用。更多还原

【Abstract】 The micromorphic change of free surface and property of corrosion resistance were observed after austenitic stainless steel was treated by plastic deformation.The result indicates that,when the extent of compression deformation increases,nonuniform trend of every crystal grain deformation aggravates,the fold on the test sample surface increases,and the original smooth surface changes into roughness gradually.The ophylline is non-corrosiveness to the test sample of plastic deformation,but physiology salt water will corrode it.更多还原