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Impact of Finish-Forging Temperature on Structure and Properties of Micro-Alloyed Steels

机译：精锻温度对微合金钢组织和性能的影响

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摘要

Production of forgings made of micro-alloyed steels brings lower production and processing costs, better utilisation of steel properties and higher quality of forged pieces. Forgings made of sub-eutectoid steels micro-alloyed with vanadium, niobium and nitrogen are mostly used for components for assembly of vehicles and machines. Steels for forgings can be classified in dependence on requirements concerning dominant mechanical properties from several viewpoints. They can be classified on the basis of yield point, required level of strength, resistance against brittle fractures, parameter of formability, value of guaranteed weldability, etc. In practice these steels are often classified on the basis of their strength properties. Strength properties depend in certain extent on method of production of the given forging. On the basis of used production technology it is possible to classify the forgings to forged pieces supplied in these conditions: as is after forging, after full annealing, after heat treatment, after controlled forging, and after controlled forging with controlled cooling.
机译：由微合金钢制成的锻件的生产降低了生产和加工成本，提高了钢性能的利用率，并提高了锻件的质量。由钒，铌和氮微合金化的亚共析钢制成的锻件主要用于车辆和机器的组装部件。从几种观点来看，锻造用钢可以根据对主要机械性能的要求进行分类。可以根据屈服点，所需强度水平，抗脆性断裂性能，可成形性参数，可保证焊接性值等对它们进行分类。实际上，这些钢通常根据强度特性进行分类。强度特性在一定程度上取决于给定锻件的生产方法。根据使用的生产技术，可以将锻件分类为在以下条件下提供的锻件：锻后，完全退火后，热处理后，受控锻后以及受控冷却后的锻件。

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