Sinter hardening is a process in which the martensitic transformation occurs when powder metallurgy (PM) parts are cooled from the sintering temperature. The primary advantage of this process is the elimination of a post-sintering heat treatment. Also, because of the flexibility of this process, the final properties can be tailored via selection of the base powder, mix composition, green density, sintering conditions, and tempering temperature. Many studies have been carried out to evaluate these variables on static properties but only a few have addressed dynamic properties. In terms of static properties, it is generally established that the maximum tensile strength is achieved with carbon concentrations ranging from 0.4 to 0.8 w/ o,1-6 depending on the alloy and mix composition as well as the post-sintering cooling rate.
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机译：烧结硬化是当粉末冶金（PM）零件从烧结温度冷却时发生马氏体转变的过程。该方法的主要优点是消除了烧结后的热处理。同样，由于该方法的灵活性，可以通过选择基础粉末，混合物组成，生坯密度，烧结条件和回火温度来调整最终性能。已经进行了许多研究来评估这些变量的静态特性，但只有少数研究了动态特性。就静态性能而言，通常确定最大拉伸强度是在0.4至0.8 w / o，1-6的碳浓度范围内实现的，具体取决于合金和混合物的成分以及烧结后的冷却速率。
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