Investigation on laser welding of selective laser melted Ti-6Al-4V parts: Weldability, microstructure and mechanical properties
作者： Hanchen Yu , Fangzhi Li , Jingjing Yang , Jianjun Shao , Zemin Wang
DOI: 10.1016/J.MSEA.2017.11.086
关键词:
摘要: Abstract In this study, laser welding was successfully used to join selective melted (SLMed) SLMed and wrought Ti-6Al-4V specimens. The microstructures, microhardnesses, tensile performances, fatigue lives crack growth rates (FCGRs) of the welded specimens as well were investigated. It is found that stress-relieved has a good weldability. joints have similar microstructures (columnar prior β grain boundaries with inside acicular α′), microhardnesses (410 HV–450 HV), ultimate strengths (UTSs) (~ 1200 MPa), yield (YSs) 1080 MPa) FCGRs in zones, which are also those But lower than Ti-6Al-4V, much traditionally annealed Ti-6Al-4V. Heat treatment on decreases (390 HV–410 UTSs (1106 MPa), YSs (1008 MPa) but shows no improvements lives. can be concluded significantly influence UTSs, specimens, very limited influences due existences pores. Pores play more decisive role lives, FCGRs.
sci-hub.se 参考文章(24)
Jaap Schijve, Fatigue of structures and materials ,(2001)
Titanium and titanium alloys : fundamentals and applications Titanium and Titanium Alloys: Fundamentals and Applications. pp. 532- ,(2005) , 10.1002/3527602119
Jing Liu, Xiao-Long Gao, Lin-Jie Zhang, Jian-Xun Zhang, A study of fatigue damage evolution on pulsed Nd:YAG Ti6Al4V laser welded joints Engineering Fracture Mechanics. ,vol. 117, pp. 84- 93 ,(2014) , 10.1016/J.ENGFRACMECH.2014.01.005
Chunlei Qiu, Nicholas J.E. Adkins, Moataz M. Attallah, Microstructure and tensile properties of selectively laser-melted and of HIPed laser-melted Ti–6Al–4V Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 578, pp. 230- 239 ,(2013) , 10.1016/J.MSEA.2013.04.099
Luca Facchini, Emanuele Magalini, Pierfrancesco Robotti, Alberto Molinari, Microstructure and mechanical properties of Ti‐6Al‐4V produced by electron beam melting of pre‐alloyed powders Rapid Prototyping Journal. ,vol. 15, pp. 171- 178 ,(2009) , 10.1108/13552540910960262
J.C. Pang, S.X. Li, Z.G. Wang, Z.F. Zhang, General relation between tensile strength and fatigue strength of metallic materials Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 564, pp. 331- 341 ,(2013) , 10.1016/J.MSEA.2012.11.103
Xiao-Long Gao, Lin-Jie Zhang, Jing Liu, Jian-Xun Zhang, Porosity and microstructure in pulsed Nd:YAG laser welded Ti6Al4V sheet Journal of Materials Processing Technology. ,vol. 214, pp. 1316- 1325 ,(2014) , 10.1016/J.JMATPROTEC.2014.01.015
Giuseppe Casalino, Sabina Luisa Campanelli, Antonio Domenico Ludovico, None, Laser-arc hybrid welding of wrought to selective laser molten stainless steel The International Journal of Advanced Manufacturing Technology. ,vol. 68, pp. 209- 216 ,(2013) , 10.1007/S00170-012-4721-Z
S. Leuders, M. Thöne, A. Riemer, T. Niendorf, T. Tröster, H.A. Richard, H.J. Maier, On the mechanical behaviour of titanium alloy TiAl6V4 manufactured by selective laser melting: Fatigue resistance and crack growth performance International Journal of Fatigue. ,vol. 48, pp. 300- 307 ,(2013) , 10.1016/J.IJFATIGUE.2012.11.011
Bey Vrancken, Lore Thijs, Jean-Pierre Kruth, Jan Van Humbeeck, Heat treatment of Ti6Al4V produced by Selective Laser Melting: Microstructure and mechanical properties Journal of Alloys and Compounds. ,vol. 541, pp. 177- 185 ,(2012) , 10.1016/J.JALLCOM.2012.07.022