45钢的激光淬火温度场与相变硬化区

doi:10.13251/j.issn.0254-6051.2023.09.044

金属热处理 ›› 2023, Vol. 48 ›› Issue (9): 258-264.DOI: 10.13251/j.issn.0254-6051.2023.09.044

45钢的激光淬火温度场与相变硬化区

马正和, 阿达依·谢尔亚孜旦, 刘俊杰, 古丽·尼尕尔

新疆大学机械工程学院, 新疆乌鲁木齐 830047

收稿日期:2023-04-16 修回日期:2023-07-27 出版日期:2023-09-25 发布日期:2023-10-25
通讯作者: 阿达依·谢尔亚孜旦,教授,博士,E-mail:adayxj@126.com
作者简介:马正和(1997—),男,硕士研究生,主要研究方向为激光表面处理,E-mail:250807473@qq.com。
基金资助:
国家自然科学基金(51665056)

Laser quenching temperature field and phase transformation hardened zone of 45 steel

Ma Zhenghe, Adayi Xieeryazidan, Liu Junjie, Guli Nigaer

School of Mechanical Engineering, Xinjiang University, Urumqi Xinjiang 830047, China

Received:2023-04-16 Revised:2023-07-27 Online:2023-09-25 Published:2023-10-25

摘要/Abstract

摘要： 通过数值模拟计算得出45钢淬火过程中温度场的瞬态规律及相变硬化规律,分析单一因素变化对相变硬化区的影响。基于Comsol Multiphysics软件建立45钢激光淬火过程的热力耦合模型,利用JMatpro计算得出材料的相变曲线、CCT曲线及材料的部分热物性参数随温度的变化曲线,对整个模型进行修改,基于相变曲线及CCT曲线定义相变硬化区。结果表明,淬硬层呈高斯分布,不同工艺参数下激光淬火相变硬化层明显不同。在其它条件相同的情况下,相变硬化层深度及宽度与激光功率呈正相关,与扫描速度和光斑直径负相关。通过将JMatpro与Comsol Multiphysics相结合,可以建立并计算考虑热物性参数变化的激光淬火热力学耦合模型,实现激光淬火温度场和相变硬化区的预测。

关键词: 激光淬火, 相变硬化, 温度场, 数值模拟

Abstract: Transient law of temperature field and phase transformation hardening law of 45 steel during quenching process were obtained by numerical simulation, and the influence of single factor change on phase transformation hardened zone was analyzed. The thermal coupling model of laser quenching process of the 45 steel was established based on software Comsol Multiphysics, the whole of which is then modified by JMatpro calculated phase transformation curves and CCT curves, and the change curves of some thermal physical parameters of the material with temperature. The phase transformation hardened zone was defined based on the phase transformation curve and CCT curve. The results show that the hardened layer has a Gaussian distribution, and the laser quenching hardened layer is obviously different under different process parameters. Under the same other conditions, the depth and width of phase transformation hardened layer are positively correlated with laser power, and negatively correlated with scanning speed and spot diameter. It is concluded that, by combining JMatpro with Comsol Multiphysics, a thermodynamic coupling model of laser quenching considering the change of thermal physical parameters can be established and calculated, by which the prediction of laser quenching temperature field and phase transformation hardened zone can be realized.

Key words: laser quenching, transformation hardening, temperature field, numerical simulation

中图分类号:

TG156.3

马正和, 阿达依·谢尔亚孜旦, 刘俊杰, 古丽·尼尕尔. 45钢的激光淬火温度场与相变硬化区[J]. 金属热处理, 2023, 48(9): 258-264.

Ma Zhenghe, Adayi Xieeryazidan, Liu Junjie, Guli Nigaer. Laser quenching temperature field and phase transformation hardened zone of 45 steel[J]. Heat Treatment of Metals, 2023, 48(9): 258-264.

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45钢的激光淬火温度场与相变硬化区

Laser quenching temperature field and phase transformation hardened zone of 45 steel

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