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引起零件失效的原因是复杂的,归结起来失效的产生可以简化为两大方面的原因,即材料冶金质量问题和零件服役、制造的力学问题。金属零件的破损及失效,隶属材料性能的范畴。一定的性能对应于一定的组织结构,而组织结构又取决于金属材料的化学成分,本性(原子结晶构造)及其加工(热处理、化学处理、冷热塑性变形、铸造、
Cause of the failure of the parts is complicated. In summary, failure can be reduced to two major reasons, namely, the quality of materials and metallurgical parts and components, the mechanics of manufacturing. Metal parts damaged and failure, under the scope of material properties. Certain properties correspond to a certain organizational structure, which in turn depends on the chemical composition of the metal material, nature (atomic crystalline structure) and its processing (heat treatment, chemical treatment, cold and hot plastic deformation, casting,