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热处理的目的是改变金属及合金的组织、提高物理性能和机械性能。根据合金的性质、用途及其产品的加工方法选择合理的热处理制度。改变加热温度、调整加热和冷却速度以及在相应温度下的保温时间,可以得到具有不同性能的材料。随着材料性能的高度利用,材料的种类不断增多。如果添加特殊元素或限制合金成分进行详细分类时,即使是同一种材料也不单纯是以提高抗拉强度和加工性作为确定状
The purpose of heat treatment is to change the structure of metals and alloys to improve physical and mechanical properties. According to the nature of the alloy, use and processing methods of their products choose a reasonable heat treatment system. Changing the heating temperature, adjusting the heating and cooling rates and the holding time at the corresponding temperature, can result in materials with different properties. With the high utilization of material properties, the types of materials are increasing. If you add a special element or limit the composition of the alloy for detailed classification, even if the same material is not simply to improve the tensile strength and processability as a definite