TC4钛合金超声微锻造强化机理及数值模拟

doi:10.12068/j.issn.1005-3026.2021.09.013

东北大学学报（自然科学版） ›› 2021, Vol. 42 ›› Issue (9): 1306-1312.DOI: 10.12068/j.issn.1005-3026.2021.09.013

TC4钛合金超声微锻造强化机理及数值模拟

任朝晖，张梓婷，张兴文，王琛

(东北大学机械工程与自动化学院，辽宁沈阳110819)

修回日期:2020-11-27 接受日期:2020-11-27 发布日期:2021-09-16
通讯作者: 任朝晖
作者简介:任朝晖(1968-)，男，辽宁沈阳人，东北大学教授，博士生导师.
基金资助:
国家重点研发计划项目(2017YFB1103700) .

Strengthening Mechanism Analysis and Numerical Simulation of Ultrasonic Micro-forging of TC4 Titanium Alloy Processing

REN Zhao-hui， ZHANG Zi-ting， ZHANG Xing-wen， WANG Chen

School of Mechanical Engineering & Automation， Northeastern University， Shenyang 110819， China.

Revised:2020-11-27 Accepted:2020-11-27 Published:2021-09-16
Contact: REN Zhao-hui
About author:-
Supported by:
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摘要/Abstract

摘要： 为进一步研究超声微锻造强化工艺加工机理及加工后材料表面，以TC4钛合金的超声微锻造强化加工为研究对象，使用基于Boussinesq解及DC-FFT算法的半解析法(SAM)，建立了加工过程中载荷加载的数学模型并进行求解，分析讨论其加工机理.同时建立有限元模型，对完整加工过程进行有限元分析，验证半解析结果，并与传统滚压光整强化加工进行对比.研究表明，超声微锻造加工后的表面能够形成一定深度的残余压应力层以及塑性变形强化层，相较于传统滚压光整强化，具有更好的表面强化效果.

关键词: 钛合金;超声微锻造;滚压光整强化;半解析法;有限元

Abstract: In order to further study the machining mechanism of ultrasonic micro-forging and the surface of the processed material， the ultrasonic micro-forging and strengthening machining of TC4 titanium alloy was taken as the research object， the semi-analytical method(SAM)based on Boussinesq solution and DC-FFT algorithm was used to establish the mathematical model of loading in the machining process and solve it， and the machining mechanism was analyzed and discussed. At the same time， the finite element model was established to analyze the complete machining process， verify the semi-analytical results， and compare it with the traditional rolling finishing machining. The results showed that the surface of ultrasonic micro-forging can form a certain depth of residual compressive stress layer and plastic deformation strengthening layer， and has better surface strengthening effect than the traditional rolling finishing strengthening.

Key words: titanium alloy; ultrasonic micro-forging; rolling finishing strengthening; semi-analytical method(SAM); finite element

中图分类号:

TG113.26

任朝晖，张梓婷，张兴文，王琛. TC4钛合金超声微锻造强化机理及数值模拟[J]. 东北大学学报（自然科学版）, 2021, 42(9): 1306-1312.

REN Zhao-hui， ZHANG Zi-ting， ZHANG Xing-wen， WANG Chen. Strengthening Mechanism Analysis and Numerical Simulation of Ultrasonic Micro-forging of TC4 Titanium Alloy Processing[J]. Journal of Northeastern University(Natural Science), 2021, 42(9): 1306-1312.

参考文献

[1]曲先强，石德新，崔洪斌，等.焊接残余应力场中裂纹闭合模型［J］.哈尔滨工程大学学报，2006，27(5):686-689，701.(Qu Xian-qiang，Shi De-xin，Cui Hong-bin，et al.Crack closure model in residual stress field of welding［J］.Journal of Harbin Engineering University，2006，27(5):686-689，701.)
[2]Szost B A，Terzi S，Martina F，et al.A comparative study of additive manufacturing techniques:residual stress and microstructural analysis of CLAD and WAAM printed Ti-6Al-4V components［J］.Materials & Design，2016，89:559-567.
[3]Fan X F，Zhou J，Qiu C J，et al.Experimental study on surface characteristics of laser cladding layer regulated by high-frequency microforging ［J］.Surface and Coatings Technology，2017，20(3):456-464.
[4]Li G，Qu S，Xie M X，et al.Effect of ultrasonic surface rolling at low temperatures on surface layer microstructure and properties of HIP Ti-6Al-4V alloy［J］.Journal of Thermal Spray Technology，2017，316:75-84.
[5]Zhang Q L，Hu Z Q，Su W W，et al.Microstructure and surface properties of 17-4PH stainless steel by ultrasonic surface rolling technology［J］.Surface and Coatings Technology，2017，321:64-73.
[6]Liu Y，Xue G，Zhao X H.Strain-induced gradient crystalline evolution mechanism of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si during ultrasonic impacting and rolling process ［J］. Micro & Nano Letters，2017，12(5):304-307.
[7]Liu C，Liu D，Zhang X，et al.Effect of the ultrasonic surface rolling process on the fretting fatigue behavior of Ti-6Al-4V alloy［J］.Materials，2017，10(7):833-844.
[8]余金水.高频微锻造对激光成形304不锈钢试件力学性能的影响［D］.衡阳:南华大学，2012.(Yu Jin-shui.Influence of high-frequency micro-forging on mechanical properties of 304 stainless steel specimens by laser rapid forming［D］.Hengyang:University of South China，2012.)
[9]李礼，朱有利，吕光义，等.TC4 钛合金超声深滚表面强化技术的研究［J］.材料工程，2008，11:68-70，74.(Li Li，Zhu You-li，Lyu Guang-yi，et al.Study on ultrasonic deep rolling surface mechanical enhancement technique of TC4 titanium alloy［J］.Journal of Materials Engineering，2008，11:68-70，74.)
[10]Johnson K L.Contact mechanics［M］.Cambridge:Cambridge University Press，1985.
[11]Liu S，Wang Q.Studying contact stress fields caused by surface tractions with a discrete convolution and fast Fourier transform algorithm［J］.Journal of Tribology，2002，124(1):36-45.
[12]Wang Z J，Wang W Z，Hu Y Z，et al.A numerical elastic-plastic contact model for rough surfaces［J］.Tribology Transactions，2010，53(2):224-238.

TC4钛合金超声微锻造强化机理及数值模拟

Strengthening Mechanism Analysis and Numerical Simulation of Ultrasonic Micro-forging of TC4 Titanium Alloy Processing

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