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Prevention of particle embrittlement in grain-refined, high- strength steels

机译:防止晶粒细化的高强度钢发生颗粒脆化

摘要

A process for improving the impact properties of high-strength steels containing grain-refining additions is disclosed along with a product made in accordance therewith. The process comprises a pretreatment step involving heating and hot deformation at a temperature preferably in excess of the solution temperature of the least soluble nitride or carbonitride species present in the steel (T ≧≈1200° C.) followed by accelerated cooling, such as by water quenching, oil quenching, or forced-air cooling. Thereafter, the material is subjected to a subcritical annealing treatment (≈700° C.), austenitized at low-to-moderate temperatures of between about 850°- 950° C., and then quenched and tempered.
机译:公开了一种用于改善包含晶粒细化添加剂的高强度钢的冲击性能的方法以及根据其制备的产品。该方法包括预处理步骤,该预处理步骤包括在优选超过钢中存在的最不溶性氮化物或碳氮化物种类的固溶温度(T≧& 1200°C)的温度下加热和热变形,然后加速冷却,例如如水淬,油淬或强制风冷。此后,对该材料进行亚临界退火处理(约700°C),在大约850°C至950°C之间的中低温度下进行奥氏体化,然后进行淬火和回火。

著录项

  • 公开/公告号US5409554A

    专利类型

  • 公开/公告日1995-04-25

    原文格式PDF

  • 申请/专利权人 THE TIMKEN COMPANY;

    申请/专利号US19930122324

  • 发明设计人 MICHAEL J. LEAP;

    申请日1993-09-15

  • 分类号C21D8/00;C22F1/00;

  • 国家 US

  • 入库时间 2022-08-22 04:05:06

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