Proceedings, Volume 2

aluminum alloy annealed ausform behavior bending brittle fracture calculated carbides Charpy cleavage crack cleavage fracture crack front crack growth crack length crack propagation crack tip crack velocity cross slip cycles decrease density dimples direction dislocation drilled ductile effect elastic electron elongation energy equation etching experimental factor fatigue crack ferrite flow stress formation fracture stress fracture surface glass glide grain boundary holes impact increase initiation intergranular intergranular fracture kg/mm² load macroscopic martensite material maximum measured mechanism metals microcracks notch nucleation observed obtained occurs plane strain plastic deformation plastic fracture plastic strain plastic zone plate polycrystalline prestrain pure iron quenched region river line room temperature samples shear stress shown in Figure shows single crystals slip band solid specimens steel strain rate stress concentration stress-strain curve striations tempered tensile stress thickness tion Trans transition temperature twin Wallner lines width yield strength yield stress