1. Hybrid Laser-Arc Welding of Ni-base Alloy 690 Open Access Author: Blecher, Jared Jacob Title: Hybrid Laser-Arc Welding of Ni-base Alloy 690 Graduate Program: Materials Science and Engineering Keywords: laser weldinghybrid weldingnickel alloykeyhole porosityroot defectinline coherent imagingheat transfer and fluid flow modeling File: Download Blecher_Dissertation_v2.pdf Committee Members: Tarasankar Debroy, Dissertation Advisor/Co-AdvisorTodd Palmer, Committee Chair/Co-ChairLong-Qing Chen, Committee MemberAllison Michelle Beese, Committee MemberRobert Carl Voigt, Outside Member