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http://dx.doi.org/10.5781/JWJ.2017.35.2.2

The Effect of Interpass Peening on Mechanical Properties in Additive Manufacturing of Ti-6Al-4V  

Byun, Jae-Gyu (Dept. of Materials System Engineering, Graduate School, Pukyong National Univ.)
Yi, Hui-jun (Defense Inducstrial Division, Hyundai Rotem Company)
Cho, Sang-Myung (Dept. of Materials System Engineering, Pukyong National University)
Publication Information
Journal of Welding and Joining / v.35, no.2, 2017 , pp. 6-12 More about this Journal
Abstract
Ti-alloys have high specific strength and are widely used for the filed of space aeronautics plant. However, it is difficult to process Ti-Alloys due to its high yield strength and it cannot raise the machining speed because it has a possibility of catching fire while processing. In order to reduce the number of processes for the Ti-alloys, the researches related to Additive Manufacturing(AM) have been actively carried out at the moment. As for the initial stage of AM market related to Ti-alloys, it started to use the raw material of powder metal, and it is currently being developed based on welding. In this study, Interpass peening reduced the size of the primary ${\beta}$ grain in the z-axis direction, increased the nucleation site of ${\alpha}-colony$, and decreased the length and width of ${\alpha}$ laths as though interpass rolling. Interpass peening leads to an increase in yield/ultimate tensile strength without decrease elongation, resulting decrease in anisotropy of the material.
Keywords
Additive manufacturing; 3D printing; Peening; Mechanical property; GTAW;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 ASTM, F2792-12a, Standard Terminology for Additive Manufacturing Technologies
2 Jae-Gyu Byun, Sang-Myung Cho, Trend of Metal 3D Printing by Welding, J. of Welding and Joining, 34(4) (2016), 1-8 (in Korean)   DOI
3 Kang, Min-Cheol, Dea-Hee Ye, and Geun-Ho Go, International Development Trend and Technical Issues of Metal Additive Manufacturing, J. of Welding and Joining, 34(4) (2016), 9-16 (in Korean)   DOI
4 Horii, Toshihide, Soshu Kirihara, and Yoshinari Miyamoto, Freeform fabrication of Ti-Al alloys by 3D microwelding, Intermetallics, 16(11) (2008), 1245-1249   DOI
5 Ma, Yan, et al., The effect of location on the microstructure and mechanical properties of titanium aluminides produced by additive layer manufacturing using in-situ alloying and gas tungsten arc welding, Materials Science and Engineering, A 631 (2015), 230-240
6 Baufeld, Bernd, and Omer Van der Biest, Mechanical properties of Ti-6Al-4V specimens produced by shaped metal deposition, Science and technology of advanced materials, 10(1) (2009), 015008   DOI
7 Szost, Blanka A., et al., A comparative study of additive manufacturing techniques, Residual stress and microstructural analysis of CLAD and WAAM printed Ti-6Al-4V components, Materials & Design, 89 (2016), 559-567   DOI
8 Wang, Fude, Stewart W. Williams, and M. T. Rush, Morphology investigation on direct current pulsed gas tungsten arc welded additive layer manufactured Ti6Al4V alloy, Int J Adv Manuf Technol, 57 (2011) , 597-603   DOI
9 Martina, Filomeno, et al., Investigation of the benefits of plasma deposition for the additive layer manufacture of Ti-6Al-4V., Journal of Materials Processing Technology, 212(6) (2012), 1377-1386   DOI
10 Antonysamy, Alphons Anandaraj, Microstructure, texture and mechanical property evolution during additive manu facturing of Ti6Al4V alloy for aerospace applications, University of Manchester for the degree of Doctor of Philosophy in the faculty of Engineering and Physical Sciences, (2012)
11 Colegrove, Paul, and Stewart Williams, High deposition rate high quality metal additive manufacture using wire+ arc technology, (2012)
12 Donoghue, J., et al., The effectiveness of combining rolling deformation with Wire-Arc Additive Manufacture on $\beta$-grain refinement and texture modification in Ti-6Al-4V, Materials Characterization, 114 (2016), 103-114   DOI