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目前国外热处理工艺的发展趋向是不断地改革加热和冷却技术,发展可控气氛、形变热处理和真空热处理等,创立新的化学热处理工艺。对工艺原理方面,随着金属材料科学的研究发展,认识逐渐深化,建立了一些观点,对金属强化的机构,化学热处理的物理化学问题等能够更好地得到阐明。近年来,热处理工艺的发展主要是围绕以下几方面的要求进行的:
At present, the development trend of foreign heat treatment process is to continuously reform the heating and cooling technology, the development of controlled atmosphere, deformation heat treatment and vacuum heat treatment, the creation of new chemical heat treatment process. With respect to the principle of the process, with the research and development of the science of metal materials, the understanding is gradually deepened and some opinions are established. The mechanism of metal strengthening and the physicochemical problems of chemical heat treatment can be better clarified. In recent years, the development of heat treatment process is mainly centered on the following requirements: