【摘要】 本文研究不同硼含量对12CrNi3MoV钢力学性能的影响及其作用机制。如酸溶硼含量B_sol<0.001％时,钢的韧性有所改善;而B_sol>0.001％时,钢的韧性随硼含量的增加而逐渐下降,这是由于Fe₂₃（CB）₆等碳硼化物的析出而引起的。更多还原

【Abstract】 The influence of various boron contents on the properties of 12CrNi3MoV steel and its me-chanism were studied. When soluble boron (B_sol) is less than 0.001%, toughness of the steel isimproved in some extent. However, when B_sol is more than 0.001% toughness of the steel dec-reases gradually as the B_sol increases. The decrease of toughness is a consequence of precipi-tation of boron carbides such as Fe₂₃（CB）₆.更多还原