未再结晶固溶处理对无钴马氏体时效钢组织和拉伸性能的影响

季长恩;王威;单以银;杨柯

钢铁 ›› 2008, Vol. 43 ›› Issue (9) : 75-0.

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钢铁 ›› 2008, Vol. 43 ›› Issue (9) : 75-0.
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未再结晶固溶处理对无钴马氏体时效钢组织和拉伸性能的影响

  • 季长恩1,2,王威1,2,单以银1,杨柯1
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Influence of Unrecrystallization Solution Treatment on Microstructure and Tensile Properties of CobaltFree Maraging Steel

  • 季长恩1,2,王威1,2,单以银1,杨柯1
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摘要

研究了未再结晶固溶处理对18Ni型无钴马氏体时效钢组织和拉伸性能的影响。研究结果表明,无钴马氏体时效钢经过未再结晶固溶处理后,马氏体形貌由块状转变为细小的条束状,拉伸断口上的韧窝明显变小变密;固溶态的硬度提高约3(HRC),抗拉强度提高约100 MPa;而时效态的硬度和强度提高幅度较小。

Abstract

Influence of unrecrystallization solution treatment on microstructure and tensile properties of 18Ni cobaltfree maraging steel was investigated. The experimental results showed that after unrecrystallization solution treatment,the morphology of martensites was changed from blocky to stringer, and the dimples on the tensile fracture became much finer; the hardness and tensile strength of the steel in solution condition increased by about HRC 3 and 100 MPa, respectively, but increased less for aged steel.

关键词

未再结晶固溶处理 / 无钴马氏体时效钢 / 显微组织 / 拉伸性能

Key words

unrecrystallization solution treatment / cobaltfree maraging steel / microstructure / tensile property

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季长恩, 王威, 单以银, . 未再结晶固溶处理对无钴马氏体时效钢组织和拉伸性能的影响[J]. 钢铁, 2008, 43(9): 75-0
JI Changen, WANG Wei, SHAN Yiyin, et al. Influence of Unrecrystallization Solution Treatment on Microstructure and Tensile Properties of CobaltFree Maraging Steel[J]. Iron and Steel, 2008, 43(9): 75-0

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