摘要:通过对不同Mn/Si值熔敷金属的低温冲击试验、金相分析和TEM分析,研究了Mn/Si值对组织、夹杂物形态和低温韧性的影响。结果表明,随着Mn/Si值的变化,高强钢埋弧焊熔敷金属低温韧性也发生变化,当Mn/Si值处于4~8之间时,熔敷金属-50℃冲击值达到lOOJ,而Mn/Si值低于或高于此区间,则低温韧性均下降。
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