Elimination of Extraordinarily High Cracking Susceptibility of Aluminum Alloy Fabricated by Laser Powder Bed Fusion

Authors

Holden Hyer, University of Central Florida
Le Zhou, Marquette UniversityFollow
Sharon Park, University of Central Florida
Thinh Huynh, University of Central Florida
Abhishek Mehta, University of Central Florida
Saket Thapliyal, University of North Texas
Rajiv S. Mishra, University of North Texas
Yongho Sohn, University of Central Florida

Document Type

Article

Publication Date

3-20-2022

Publisher

Elsevier

Source Publication

Journal of Materials Science & Technology

Source ISSN

1005-0302

Abstract

Using the calculation of phase diagrams approach and Scheil solidification modeling, the Al-2.5Mg-1.0Ni-0.4Sc-0.1Zr alloy was designed, intentionally with an extraordinarily high cracking susceptibility, making it prime for solidification cracking during laser powder bed fusion. This study demonstrates the ability to mitigate even the most extreme solidification cracking tendencies in aluminum alloys with only minor alloying additions of Sc and Zr, 0.5 wt.% max. Furthermore, by employing a simple direct ageing heat treatment, good tensile mechanical properties were observed with a yield strength of 308 MPa, an ultimate tensile strength of 390 MPa, and a total elongation of 11%.

Comments

Accepted version. Journal of Materials Science & Technology, Vol. 103 (March 2022): 50-58. DOI. © 2022 Elsevier. Used with permission.

Recommended Citation

Hyer, Holden; Zhou, Le; Park, Sharon; Huynh, Thinh; Mehta, Abhishek; Thapliyal, Saket; Mishra, Rajiv S.; and Sohn, Yongho, "Elimination of Extraordinarily High Cracking Susceptibility of Aluminum Alloy Fabricated by Laser Powder Bed Fusion" (2022). Mechanical Engineering Faculty Research and Publications. 304.
https://epublications.marquette.edu/mechengin_fac/304