LIU Huan,XU Yingdong,LI Jian,et al. Study on local cyclic plastic behavior of 3D printed titanium alloy notched parts[J]. Journal of Mechanical Strength,2025,47(6):141-151.
LIU Huan,XU Yingdong,LI Jian,et al. Study on local cyclic plastic behavior of 3D printed titanium alloy notched parts[J]. Journal of Mechanical Strength,2025,47(6):141-151. DOI: DOI:10.16579/j.issn.1001.9669.2025.06.017.
Study on local cyclic plastic behavior of 3D printed titanium alloy notched parts
The main purpose was to study the local cyclic plastic behavior of 3D printed titanium alloy notched parts. Firstly
the local stress and strain field near the 3D printed titanium alloy notch was analyzed in detail by finite element method, and the evolution of stress and strain field was deeply investigated. Then
the experimental study was carried out and the influence of the forming direction on the results was analyzed. The results show that ratcheting deformation occurs at the notch root
with the maximum ratcheting strain rate in the L
3
direction and the minimum ratcheting strain rate in the L
1
direction. The influence of the forming direction on the stress triaxiality is not too obvious. The elastic strain energy of different forming directions is almost no difference. However
the forming direction has a great influence on the plastic strain energy. With the increase of the number of cycles
the difference of plastic strain energy results for different notch radii also becomes larger.
ZHANG Saibo , ZHAO Junsong , LI Xiaohai , et al . Application and development prospect of metal 3D printing technology [J]. Equipment Manufacturing Technology , 2022 ( 11 ): 207 - 210 . (In Chinese)
ZHAO Yong , LIN Feng , TIAN Yinjun . Research on 3D printing manufacture of TC4 component of solid rocket motor [J]. Journal of Propulsion Technology , 2022 , 43 ( 12 ): 276 - 284 . (In Chinese)
QI Zhao , WANG Bin , ZHANG Peng , et al . Effects of stress ratio on the fatigue crack growth rate under steady state of selective laser melted TC4 alloy with defects [J]. Acta Metallurgica Sinica , 2023 , 59 ( 10 ): 1411 - 1418 . (In Chinese)
WANG Yizhen , WANG Xiangtian , HOU Rongguo , et al . Study on surface residual stress distribution of 3D printing TC4 by abrasive waterjet shot peening [J]. Tool Engineering , 2022 , 56 ( 8 ): 67 - 71 . (In Chinese)
BAI Yawen , LIU Zhichao , CHENG Zhiming , et al . Study on microstructure and tribological properties of 3D printed CNTs/TC4 composites [J]. Applied Laser , 2020 , 40 ( 3 ): 399 - 403 . (In Chinese)
EDWARDS P , RAMULU M . Fatigue performance evaluation of selective laser melted Ti-6Al-4V [J]. Materials Science and Engineering A , 2014 , 598 : 327 - 337 .
ZHAN Z X . Fatigue life calculation for TC4-TC11 titanium alloy specimens fabricated by laser melting deposition [J]. Theoretical and Applied Fracture Mechanics , 2018 , 96 : 114 - 122 .
WANG Yanrong , LI Hongxin , YUAN Shanhu , et al . Method for notched fatigue life prediction with stress gradient [J]. Journal of Aerospace Power , 2013 , 28 ( 6 ): 1208 - 1214 . (In Chinese)
SU Juanhua , ZHOU Tiezhu , REN Fengzhang , et al . High-temperature tensile properties and fracture morphology analysis of commercially pure titanium [J]. The Chinese Journal of Nonferrous Metals , 2015 , 25 ( 6 ): 1471 - 1479 . (In Chinese)
CHABOCHE J L . Time-independent constitutive theories for cyclic plasticity [J]. International Journal of Plasticity , 1986 , 2 : 149 - 188 .
WU Zhirong , HU Xuteng , XIN Pengpeng , et al . Constitutive modeling method for stable cyclic stress-strain curve of metal materials based on chaboche model [J]. Materials for Mechanical Engineering , 2013 , 37 ( 10 ): 92 - 95 . (In Chinese)
PAUL S K , SIVAPRASAD S , DHAR S , et al . Key issues in cyclic plastic deformation:experimentation [J]. Mechanics of Materials , 2011 , 43 ( 11 ): 705 - 720 .
ZHANG Bowen , WAN Zhengquan , ZHANG Aifeng , et al . Effect of stress triaxiality on the failure behavior of TA31 titanium alloy [J]. Journal of Ship Mechanics , 2022 , 26 ( 10 ): 1485 - 1495 . (In Chinese)
LIU L X , ZHENG Q L , ZHU J , et al . Effects of stress triaxiality and lode parameter on ductile fracture in aluminum alloy [J]. Rare Metal Materials and Engineering , 2019 , 48 ( 2 ): 0433 - 0439 .
BRIDGMAN P W . Studies in large plastic flow and fracture with special emphasis on the effects of hydrostatic pressure [M]. New York : McGraw-Hill , 1952 : 1 - 362 .
DAI Qiao , HE JueHeng , ZHOU Jinyu , et al . Characterization of cyclic strain field at the fatigue crack tip of industrial pure titanium based on DIC and Irwin models [J]. Rare Metal Materials and Engineering , 2021 , 50 ( 8 ): 2815 - 2822 . (In Chinese)
GÓMEZ GONZALES G L , ORTIZ GONZÁLEZ J A , ANTUNES F V , et al . Experimental determination of the reversed plastic zone size around fatigue crack using digital image correlation [J]. Theoretical and Applied Fracture Mechanics , 2023 , 125 : 103901 .