研究了一种新型含硼低碳高锰合金并讨论了热处理对其组织的影响。研究表明,合金铸态组织由铁素体基体（少量残留奥氏体）、M2B硼化物、M23（C,B）6以及Ti（C,N）相组成,且硼化物呈断续网状分布;高温淬火后基体并没有发生马氏体相变,基体中残留奥氏体的含量增加,硼化物因部分溶解体积分数减少,且硼化物的分布更加弥散。从热力学角度分析了热处理对合金组织的影响。
A novel low-carbon high-manganese alloy containing boron was developed and effect of heat treatment on microstructure of the steel was discussed.The results indicate that the microstructure of as-cast alloy consists of ferrite matrix（with some residual austenite）,M2B boride,M23（C,B）6 and Ti（C,N） phase,and the boride distributes in the form of intermittent network.After high temperature quenching,No martensite transformation is observed in the matrix and the boride volume fraction decreases due to dissolution of partial boride,and it distributes more even.The effect of heat treatment on microstructure of the alloy is analyzed by thermodynamics.
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