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本文就中碳 Si-Mn 钢300℃等温和淬火组织的低温回火脆性及其形成原因进行了讨沦,发现等温处理获得的贝氏体组织具有较高的热稳定性。
In this paper, the low temperature temper brittleness and the formation reason of the isothermal quenched microstructure of medium carbon Si-Mn steel at 300 ℃ were discussed. It was found that the bainite structure obtained by isothermal treatment has high thermal stability.