Nb对芯棒用H13钢偏析、液析碳化物及力学性能的影响*

王明, 马党参, 刘振天, 周健, 迟宏宵, 代建清

EFFECT OF Nb ON SEGREGATION, PRIMARY CARBIDES AND TOUGHNESS OF H13 STEEL

WANG Ming, MA Dangshen, LIU Zhentian, ZHOU Jian, CHI Hongxiao, DAI Jianqing

表1 实验钢的化学成分

Steel C Mn Si Cr Mo V P S Nb Standard 0.32~0.45 020~0.50 0.80~1.20 4.75~5.50 1.10~1.75 1.10~1.75 <0.025 <0.005 - H13 0.370 0.36 1.10 5.02 1.38 1.07 0.009 0.003 - H13-Nb 0.365 0.44 0.96 5.19 1.37 1.08 0.008 0.004 0.06