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在这一节里,我们主要讨论的是自奥氏体中直接分解出来的共析组织-P 类产物,包括 P、S、T。代号表示:F-铁素体;Ca-碳化物,包括渗碳体;P-珠光体;S-索氏体;T-屈氏体;B-贝氏体;M-马氏体;A-奥氏体。P 集合体的形态规律及后生成相在普通碳钢中,无论低碳还是高碳,P 集合体随过冷度的增加,亦即随形成温度的降低,在外形上不发生明显的变化,即使在 C 曲线拐弯处,P 集合体仍呈圆球
In this section, we mainly discuss the eutectoid tissue-P products that are directly decomposed from austenite, including P, S, T. F-ferrite; Ca-carbide including cementite; P-pearlite; S-sorbite; T-troostite; B-bainite; M-martensite; A- Austenitic. P aggregate morphology and post-formation phase In ordinary carbon steel, regardless of low carbon or high carbon, P aggregate with the undercooling increases, that is, with the formation of temperature decreases in the shape does not change significantly, Even in the C curve corner, P collection is still spherical