引用本文:何浩然,刘峰,李恒智,张晖辉.喷丸处理Q235钢中晶粒尺寸与残余应力的关系预测∗[J].中国表面工程,2021,34(2):49~58
He Haoran,Liu Feng,Li Hengzhi,Zhang Huihui.Prediction of Relationship Between Grain Size and Residual Stress in Shot Peening Q235 Steel[J].China Surface Engineering,2021,34(2):49~58
【打印本页】   【HTML】   【下载PDF全文】   【查看/发表评论】  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被：浏览 1805次   下载 1008次 本文二维码信息
码上扫一扫！
分享到： 微信 更多
字体:加大+|默认|缩小-
喷丸处理Q235钢中晶粒尺寸与残余应力的关系预测∗
何浩然1, 刘峰1, 李恒智2, 张晖辉1
1.燕山大学河北省重型装备与大型结构力学可靠性重点实验室 秦皇岛 066004;2.河北对外经贸职业学院 秦皇岛 066311
摘要:
作为优异的表面处理工艺,喷丸表面处理能够提高金属表面性能,被广泛应用于航天航空领域。 为了研究喷丸表面强化的内在物理机理,建立了喷丸冲击的力学模型,应用 DYNA 软件研究弹丸速度、半径和弹丸数量等因素对残余应力的影响。 进一步利用 Zener-Hollomon 参数模型和动态再结晶公式计算出理论晶粒尺寸,并讨论残余应力与晶粒尺寸的演化规律。 分析结果发现:弹丸速度、半径和弹丸数量的增大会使残余应力变大而晶粒尺寸相对变小。 但并未发现残余应力与晶粒尺寸之间存在定量关系,表明这两种强化机制相互独立。
关键词:  喷丸处理  dyna 软件  有限元  残余应力  晶粒细化  Zener-Hollomon 模型
DOI：10.11933/j.issn.1007-9289.20210122001
分类号:TG668
基金项目:河北省自然科学基金资助项目(E2017203240)
Prediction of Relationship Between Grain Size and Residual Stress in Shot Peening Q235 Steel
He Haoran1, Liu Feng1, Li Hengzhi2, Zhang Huihui1
1.Key Laboratory of Mechanical Reliability for Heavy Equipments and Large Structures of Hebei Province, Yanshan University, Qinhuangdao 066004 , China;2.Hebei Institute of International Business and Economics, Qinhuangdao 066311 , China
Abstract:
As an excellent surface treatment process, shot peening surface treatment can improve metal surface performance and is widely used in the aerospace field. In order to study the physical mechanism of shot peening surface strengthening, a mechanical model of shot peening impact was established. The DYNA software was used to study the impact of shot velocity, radius and number of shots on the residual stress. The Zener-Hollomon parameter model and dynamic recrystallization were further used. The formula calculates the theoretical grain size, and dis-cusses the evolution rule of residual stress and grain size. Results show that the increase of projectile velocity, radius and number of shot peening will make the residual stress larger and the grain size relatively smaller. Although the changes of residual stress and grain size are similar, there is no quantitative relationship between them, and these two strengthening mechanisms are independent of each other.
Key words:  shot peening  dyna  finite element  residual stress  grain refinement  Zener-Hollomon
手机扫一扫看