主催: 一般社団法人 日本機械学会
会議名: M&M2021 材料力学カンファレンス
開催日: 2021/09/15 - 2021/09/17
Interfacial strength was evaluated in multi-layer dissimilar materials explosive welding joint. The joint was composed with five different material layers, two aluminum alloys, titanium alloy, nickel alloy and stainless steel. A crack was successfully propagated along interface between titanium alloy and nickel alloy by applying fatigue loading, and plastic deformation at an aluminum alloy layer was suppressed. A crack grew for certain length along the interface and then deflected to titanium alloy side. Direction for crack propagation might be decided by tangential stress and threshold stress intensity factor. Interfacial strength can be evaluated as crack growth resistance on fatigue crack growth curve arranged by a complex stress intensity factor for an interfacial crack.
