航空用1Cr12Ni3MoVN耐热钢的动态再结晶行为

doi:10.13251/j.issn.0254-6051.2024.06.036

金属热处理 ›› 2024, Vol. 49 ›› Issue (6): 224-231.DOI: 10.13251/j.issn.0254-6051.2024.06.036

航空用1Cr12Ni3MoVN耐热钢的动态再结晶行为

白青青^1,2, 刘庭耀^1,2, 金磊³

1.成都先进金属材料产业技术研究院股份有限公司, 四川成都 610303;
2.海洋装备用金属材料及其应用国家重点实验室, 辽宁鞍山 114009;
3.攀钢集团江油长城特殊钢有限公司, 四川江油 621700

收稿日期:2023-11-16 修回日期:2024-03-28 出版日期:2024-06-25 发布日期:2024-07-29
作者简介:白青青(1986—),女,高级工程师,主要研究方向为不锈钢基础,E-mail:89447535@qq.com

Dynamic recrystallization behavior of 1Cr12Ni3MoVN heat-resistant steel for aviation

Bai Qingqing^1,2, Liu Tingyao^1,2, Jin Lei³

1. Chengdu Advanced Metal Materials Industrial Technology Institute Co., Ltd., Chengdu Sichuan 610303, China;
2. State Key Laboratory of Metal Material for Marine Equipment and Application, Anshan Liaoning 114009, China;
3. Jiangyou Changcheng Special Steel Co., Ltd., Pangang Group, Jiangyou Sichuan 621700, China

Received:2023-11-16 Revised:2024-03-28 Online:2024-06-25 Published:2024-07-29

摘要/Abstract

摘要： 利用Gleeble-3500热模拟试验机研究了1Cr12Ni3MoVN钢在800~1100 ℃、0.01~10 s^-1变形条件下的动态再结晶行为。结果表明,各变形条件下的流变应力曲线均出现动态再结晶特征;动态再结晶组织受变形温度影响明显;应变速率为1 s^-1时,再结晶体积分数及晶粒尺寸最小;在低应变速率下变形时,易出现混晶组织;通过再结晶热力学分析,得到热变形表观激活能为468.224 kJ/mol;通过θ-σ曲线确定了临界参数之间的数学关系,建立了临界参数与Z参数的关系以及动态再结晶体积分数模型:$X_{\mathrm{DRX}}=1-\exp \left[-0.12\left(\frac{\varepsilon-\varepsilon_{\mathrm{c}}}{\varepsilon_{0.5}}\right)^{3.87}\right]$。

关键词: 1Cr12Ni3MoVN钢, 动态再结晶, 本构方程, 临界条件, 体积分数模型

Abstract: Dynamic recrystallization behavior of 1Cr12Ni3MoVN steel under deformation conditions of 800-1100 ℃ and 0.01-10 s^-1 was studied by using Gleeble-3500 thermal simulation testing machine. The results show that the dynamic recrystallization characteristics are exhibited in all flow stress curves under various deformation conditions. The dynamic recrystallization structure is significantly affected by deformation temperature. The recrystallization volume fraction and grain size are the smallest for the steel with the strain rate of 1 s^-1, moreover mixed crystal structures are prone to present in the steel at low strain rates. The apparent activation energy of thermal deformation is 468.224 kJ/mol obtained by thermodynamic analysis of recrystallization. The mathematical relationship between critical parameters is obtained through θ-σ curve, furthermore the relationship between critical parameters and the Z parameters is established, and the dynamic recrystallization volume fraction model is $X_{\mathrm{DRX}}=1-\exp \left[-0.12\left(\frac{\varepsilon-\varepsilon_{\mathrm{c}}}{\varepsilon_{0.5}}\right)^{3.87}\right]$.

Key words: 1Cr12Ni3MoVN steel, dynamic recrystallization, constitutive equation, critical condition, volume fraction model

中图分类号:

TG142.73

白青青, 刘庭耀, 金磊. 航空用1Cr12Ni3MoVN耐热钢的动态再结晶行为[J]. 金属热处理, 2024, 49(6): 224-231.

Bai Qingqing, Liu Tingyao, Jin Lei. Dynamic recrystallization behavior of 1Cr12Ni3MoVN heat-resistant steel for aviation[J]. Heat Treatment of Metals, 2024, 49(6): 224-231.

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航空用1Cr12Ni3MoVN耐热钢的动态再结晶行为

Dynamic recrystallization behavior of 1Cr12Ni3MoVN heat-resistant steel for aviation

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