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四、渗碳层的组织及残余应力渗碳层的组织及残余应力对渗碳工件的耐磨性和强韧性起着决定性的作用。渗碳层的成份实际上相当于高碳或高碳合金钢,其组织组成物为基体马氏体及一定数量的残留碳化物和残余奥氏体。由于渗层与心部碳含量的差别。在淬火后表面将会有残余应力形成。根据这些组织的数量、形态和分布以及渗层表面残余应力的性质和大小.渗碳层将具有不同的力学性能。
Fourth, the carburizing layer of the organization and residual stress Carburized layer of tissue and residual stress carburizing the workpiece wear resistance and toughness play a decisive role. Carburizing layer composition is actually equivalent to high-carbon or high-carbon alloy steel, the organizational composition of the matrix martensite and a certain amount of residual carbides and residual austenite. Due to the difference between the carburization layer and the heart carbon content. After quenching the surface will have residual stress. Depending on the number, shape and distribution of these tissues and the nature and size of the residual stress on the surface of the layer, the carburized layer will have different mechanical properties.