After intercritical treatment,the structure and properties of 18SiMnCu cold rolled sheet steel is studied. When the sheet steel held at 780℃ and followed by 25℃/ s colling rate, a composite structure of (F+M+A) and...After intercritical treatment,the structure and properties of 18SiMnCu cold rolled sheet steel is studied. When the sheet steel held at 780℃ and followed by 25℃/ s colling rate, a composite structure of (F+M+A) and optimum mechanical properties were obtained:σ_s=300MPa,σ_b = 750MPa,δ=27%, n= 0.27. The transformation process of retained austenite was examined by x-ray and TEM.展开更多
文摘After intercritical treatment,the structure and properties of 18SiMnCu cold rolled sheet steel is studied. When the sheet steel held at 780℃ and followed by 25℃/ s colling rate, a composite structure of (F+M+A) and optimum mechanical properties were obtained:σ_s=300MPa,σ_b = 750MPa,δ=27%, n= 0.27. The transformation process of retained austenite was examined by x-ray and TEM.
