金属热处理 ›› 2020, Vol. 45 ›› Issue (7): 97-100.DOI: 10.13251/j.issn.0254-6051.2020.07.021

• 工艺研究 • 上一篇    下一篇

热处理工艺对冷拔0Cr13钢丝显微组织和硬度的影响

段路昭1,2, 崔娟1,2   

  1. 1. 邢台钢铁有限责任公司, 河北 邢台 054027;
    2. 河北省线材工程技术研究中心, 河北 邢台 054027
  • 收稿日期:2019-12-20 出版日期:2020-07-25 发布日期:2020-09-07
  • 作者简介:段路昭(1986—), 男, 工程师, 硕士, 主要研究方向为先进特钢产品的研发和应用, E-mail:duanlz2016@163.com

Effect of heat treatment process on microstructure and hardness of 0Cr13 cold-drawn wire

Duan Luzhao1,2, Cui Juan1,2   

  1. 1. Xingtai Iron & Steel Co., Ltd., Xingtai Hebei 054027, China;
    2. Hebei Engineering Research Center for Wire Rod, Xingtai Hebei 054027, China
  • Received:2019-12-20 Online:2020-07-25 Published:2020-09-07

摘要: 通过Leica DM 2500光学显微镜和MICROMET 5104维氏硬度计研究了不同热处理工艺对拉拔0Cr13钢丝显微组织和硬度的影响。结果表明:试验用冷拔0Cr13不锈钢丝750~830 ℃加热2 min可以完成再结晶,而845~880 ℃加热时1 min就能完成再结晶。可见,随着加热温度的升高,材料发生再结晶的时间逐渐变短。但是当加热温度超过920 ℃后空冷过程中容易形成马氏体,且随加热温度的升高马氏体含量增加。试验用材料的最佳热处理工艺为845~880 ℃加热1 min。试验条件下,再结晶完成后,材料硬度为130~140 HV0.1。

关键词: 热处理工艺, 0Cr13钢, 显微组织, 硬度

Abstract: Effect of heat treatment process on the microstructure and hardness of 0Cr13 cold-drawn wire was studied by Leica DM2500 optical microscope and MICROMET 5104 Vickers hardness tester. The results reveal that the cold-drawn 0Cr13 stainless steel wire is recrystallized after heating at 750-830 ℃ for 2 min, and the recrystallization is completed after heating at 845-880 ℃ for 1 min. So with the increase of holding temperature, the recrystallization time shortens gradually. But the martensite is prone to form during the air cooling when holding at up to 920 ℃, and the content of martensite is increased with the increase of heating temperature. The optimum heat treatment process is holding for 1 min at 845-880 ℃, and the hardness of the tested material is about 130-140 HV0.1 when the crystallization is finished.

Key words: heat treatment process, 0Cr13 steel, microstructure, hardness

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