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伯利恒钢公司长期以来一直致力于高强度低合金钢的研究。在二十五年前就首次大批量生产含钒的热轧沉淀强化钢,到目前为止,已能生产552N/mm~2强度级别的控制轧制钒-铌钢。加深对这些钢的组织、性能和工艺之间相互关系的了解,是使这些钢商品化的基础。高强度低合金钢应用的重要物理冶金原理是夹杂物形态、固溶度、沉淀强化、晶粒细化和亚结构强化。例如,板坯加热温度的选择,一方面是
Bethlehem Steel has long been engaged in the research of high-strength, low-alloy steels. The first large-scale production of vanadium-containing hot-rolled precipitation-strengthened steel 25 years ago has produced controlled-rolled vanadium-niobium steel of 552 N / mm 2 strength. A deeper understanding of the interrelationships between the organization, performance and workmanship of these steels is the basis for commercializing these steels. Important physical metallurgical principles for the application of high strength low alloy steels are inclusions, solid solubility, precipitation strengthening, grain refinement and substructure strengthening. For example, the choice of slab heating temperature, on the one hand