Characterization and Comparison of Deformation Induced Sensitization and Carbide Precipitation: Waste/Container Corrosion

提出的研究计划旨在检查316不锈钢晶粒基体中界面碳化物析出和碳化物析出的基本原理。研究人员，包括德州大学的工程师和少数民族学生，将比较316不锈钢和304不锈钢的马氏体形核的几何和晶体特征。他们的任务将是确定碳化物析出的特定界面位置是否也是马氏体形核的特定界面位置，以及晶粒内不变的应变相交（这是304不锈钢中α初生马氏体形核所特有的）是否是316不锈钢中的沉淀形核位置。发展变形致敏和沉淀机制的基本理解的实际后果将在潜在的合金改性和在不锈钢容器或管道系统中储存和运输危险和腐蚀性废物所施加的潜在危害建模的背景下进行检查。

The proposed research program is designed to examine the fundamentals of both interfacial carbide precipitation and precipitation of carbides within a grain matrix in 316 stainless steel. Researcher, including engineers and minority students at the University of Texas, will compare the geometrical and crystallographic features of 316 stainless steel with martensite nucleation in 304 stainless steel. Their task will be to determine whether specific interfacial sites for precipitation of carbides are also specific for martensite nucleation, and whether invariant strain intersections within the grains (which are specific to alpha prime-martensite nucleation in 304 stainless steel) are precipitation nucleation sites in 316 stainless steel. Practical consequences of developing a fundamental understanding of the deformation-induced sensitization and precipitation mechanisms will be examined in the context of potential alloy modification and modeling of potential hazards imposed by storing and transporting hazardous and corrosive wastes in stainless steel containers or pipeline systems.