先共析体 [
xiān gòng xī tǐ]
[冶] proeutectoid
- 先共析铁素体的组织参数受原奥氏体晶粒直径、冷却速度及热加工方式(轧制、锻造、正火)的控制。
The microstructure factors of procutectoid ferrite are controlled by the previous austenite grain diameter, cooling rate and hot working approaches (rolling, forging and normalizing). - 低碳低合金钢焊缝金属的显微组织基本上包括先共析铁素体、针状铁素体、侧板条铁素体、少量的粒状贝氏体和马氏体。
In general, the microstructure of weld metal of the low carbon and low alloy steels consists of pre eutectoid ferrite, acicular ferrite, side plate ferrite and some granular bainite and martensite.
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