Seminar by Prof. Michael J. Demkowicz from Texas A&M University, entitled “New experiments to resolve the origin of hydrogen embrittlement in nickel and its alloys” – on Wednesday, April 29th, 2026, at 12:00 noon, in the Auditorium.

Abstract:

Is it HELP or HEDE? This seminar discusses hydrogen embrittlement in Ni and Ni-based alloys. Two recent experiments suggest that the mechanism is not localized plasticity (HELP), but rather a decohesion-type mechanism (HEDE) linked to metastable nickel hydrides. Evidence from in situ deformation and neutron diffraction supports the role of grain boundary hydrides in embrittlement and intergranular fracture.

Biography:

Prof. Michael J. Demkowicz is a faculty member in Materials Science and Engineering at Texas A&M University, working on radiation damage and hydrogen embrittlement in structural materials.