铁素体-贝氏体双相钢韧性断裂过程中的夹杂物临界尺寸及孔洞生长

赵亚峰, 刘苏杰, 陈云, 马会, 马广财, 郭翼

Critical Inclusion Size and Void Growth in Dual-Phase Ferrite-Bainite Steel During Ductile Fracture

ZHAO Yafeng, LIU Sujie, CHEN Yun, MA Hui, MA Guangcai, GUO Yi

表1 不同钢种依据式(6)的夹杂物临界尺寸估算

Table 1 Critical particle sizes across various types of steels estimated according to Equation (6)

Material μ / GPa σy / MPa dσdε / MPa rc / µm Low-carbon steel 80 295 200 2.06 Ferrite in ferrite-bainite dual-phase steel[45] 72 370 106 2.51 Bainite in ferrite-bainite dual-phase steel[45] 76 830 258 0.51 Ferrite in 600 MPa ferrite-martensite dual-phase steel[46] 78 313 160 2.30 Martensite in 600 MPa ferrite-martensite dual-phase steel[46] 79 1014 167 0.32 Ferrite in 1000 MPa ferrite-martensite dual-phase steel[46] 78 443 141 1.85 Martensite in 1000 MPa ferrite-martensite dual-phase steel[46] 79 813 280 0.52 Ferrite in ferrite-martensite dual-phase steel[47] 79 260 159 2.86 Martensite in ferrite-martensite dual-phase steel[47] 79 1000 460 0.26 Ferrite in ferrite-martensite dual-phase steel[48] 77 430 117 2.24 Martensite in ferrite-martensite dual-phase steel[48] 77 1450 431 0.18