钛微合金化对50W600钢动态再结晶及相变行为的影响

doi:10.13251/j.issn.0254-6051.2025.12.039

金属热处理 ›› 2025, Vol. 50 ›› Issue (12): 254-259.DOI: 10.13251/j.issn.0254-6051.2025.12.039

钛微合金化对50W600钢动态再结晶及相变行为的影响

吴浩¹, 霍向东¹, 管砉喧¹, 秦照强¹, 张启凡²

1.江苏大学材料科学与工程学院, 江苏镇江 212013;
2.华南理工大学机械与汽车工程学院, 广东广州 510640

收稿日期:2025-08-10 修回日期:2025-10-28 发布日期:2026-01-06
通讯作者: 霍向东,教授,博士,E-mail:hxdustb@163.com
作者简介:吴浩(2000—),男,硕士研究生,主要研究方向为无取向硅钢热轧组织与工艺,E-mail:2193270273@qq.com。

Effect of titanium microalloying on dynamic recrystallization and phase transformation behavior of 50W600 steel

Wu Hao¹, Huo Xiangdong¹, Guan Huaxuan¹, Qin Zhaoqiang¹, Zhang Qifan²

1. School of Materials Science and Engineering, Jiangsu University, Zhenjiang Jiangsu 212013, China;
2. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou Guangdong 510640, China

Received:2025-08-10 Revised:2025-10-28 Published:2026-01-06

摘要/Abstract

摘要： 通过Gleeble-3800热模拟机对应变速率、变形温度及冷却速率等参数的设定来模拟实际生产中的热轧过程,并采用光学显微镜和显微硬度计对热模拟试样进行微观结构分析与性能检测,研究50W600钢与50W600-Ti钢在奥氏体相区的动态再结晶行为及连续冷却规律。结果表明,高温低应变速率变形下更容易发生奥氏体动态再结晶,钛微合金化抑制了50W600-Ti钢在1050 ℃变形下的动态再结晶行为。变形后的连续冷却过程中,50W600-Ti钢在1050 ℃变形相变后的室温组织随冷速增大明显细化并且显微硬度显著提高。加入钛抑制了动态再结晶发生,由于相变温度较高,通过未动态再结晶的轧制以及较高的冷速可以实现细晶强化。

关键词: 无取向硅钢, 钛微合金化, 动态再结晶, 相变行为

Abstract: Hot rolling process in actual production was simulated by adjusting parameters such as strain rate, deformation temperature, and cooling rate by using a Gleeble-3800 thermal simulator. Optical microscope and microhardness tester were employed to analyze the microstructure and properties, investigating the dynamic recrystallization behavior and continuous cooling characteristics of 50W600 steel and 50W600-Ti steel in the austenite phase region. The results indicate that austenite dynamic recrystallization is more likely to occur under high-temperature and low-strain-rate deformation. Titanium microalloying suppresses the dynamic recrystallization behavior of the 50W600-Ti steel during deformation at 1050 ℃. During the continuous cooling process after deformation, the room-temperature microstructure of the 50W600-Ti steel deformed at 1050 ℃ exhibits significant refinement and a notable increase in microhardness as the cooling rate increases. The addition of titanium inhibits dynamic recrystallization. Due to the high phase transformation temperature, grain refinement strengthening can be achieved through the rolling process without dynamic recrystallization, along with higher cooling rates.

Key words: non-oriented silicon steel, titanium microalloying, dynamic recrystallization, phase transformation behavior

中图分类号:

TG142

吴浩, 霍向东, 管砉喧, 秦照强, 张启凡. 钛微合金化对50W600钢动态再结晶及相变行为的影响[J]. 金属热处理, 2025, 50(12): 254-259.

Wu Hao, Huo Xiangdong, Guan Huaxuan, Qin Zhaoqiang, Zhang Qifan. Effect of titanium microalloying on dynamic recrystallization and phase transformation behavior of 50W600 steel[J]. Heat Treatment of Metals, 2025, 50(12): 254-259.

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钛微合金化对50W600钢动态再结晶及相变行为的影响

Effect of titanium microalloying on dynamic recrystallization and phase transformation behavior of 50W600 steel

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