从局域应力/应变视角理解异构金属材料的强韧化行为
Unraveling the Strength-Ductility Synergy of Heterostructured Metallic Materials from the Perspective of Local Stress/Strain
(a) shell[
(c) microstructure and mechanical properties of ultrastrong dual-phase steel (σy—yield strength, σyu—upper yield strength, σyl—lower yield strength, σuts—ultimate tensile strength, εu—uniform elongation, εf—fracture elongation, G—gauge length, σ0—effective yield strength, KJIC—crack-initiation fracture toughness, Kss—crack-growth toughness, E'—effective modulus, JIC—size-independent fracture toughness, Δamax—maximum length for stable crack extension, B—specimen thickness, W—specimen width, a—crack length)[
(d) microstructure and fatigue properties of bone-like heterostructured steel (R—stress ratio)[
