acicular bainite

基本解释

The optical microscope, SEM and TEM tests show that the final microstructure consists of fine grain size acicular ferrite or quasi-polygonal ferrite■pearlite and little granular bainite, etc.
通过光学显微镜、扫描电镜、透射电镜研究表明：最终组织为细小的针状铁素体或准多边形铁素体、珠光体及少量粒状贝氏体等组成的混合组织。
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.
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。
The enhancement of toughness and plasticity of quasi-as-cast bainite low carbon ductile iron is contributed by the large amount of austenite and acicular carbon-free bainite inlaying in the austenite.
准铸态贝氏体低碳球铁韧塑性的提高，与其组织中形成的大量奥氏体和镶嵌在当中的针状无碳贝氏体密切相关。