B对Fe-Cr-B-C合金凝固行为、强韧性及耐磨性的影响

赵广迪, 李阳, 姚晓雨, 王亮, 李渭滨, 潘玉华, 李维娟, 王兆宇

Effect of Boron on Solidification Behavior, Strength-Toughness, and Wear Resistance of Fe-Cr-B-C Alloy

ZHAO Guangdi, LI Yang, YAO Xiaoyu, WANG Liang, LI Weibin, PAN Yuhua, LI Weijuan, WANG Zhaoyu

图13 3种B含量Fe-Cr-B-C合金铸锭的冲击断口形貌

Fig.13 Impact fracture surfaces of Fe-Cr-B-C alloy ingots with B contents of 0.0006% (a, d, g, j), 0.51% (b, e, h, k), and 2.89% (c, f, i, l) (a-c) macro morphologies of the fracture surfaces (d-f) low magnified SEM images of the cracks (g) Nb-rich boron-carbide along cracked grain boundaries (h, i) cracks at (Fe, Cr)-rich boron-carbides/matrix interface (j) Cr-rich carbide along cracked grain boundaries (k, l) cracked (Fe, Cr)-rich boron-carbides