The Bainite reaction in Fe-Si-C Alloys: The primary stage
The Bainite reaction in Fe-Si-C Alloys: The primary stage
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DOI：
10.1007/bf02642391
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发表时间：
1982-05
期刊：
影响因子：
--
通讯作者：
B. Sandvik
中科院分区：
文献类型：
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作者：
B. Sandvik
本文研究了含硅高碳钢在290~380 ° C温度范围内形成的贝氏体铁素体的形态、晶体学和亚结构。贝氏体具有板状形貌、不合理的惯习面和不合理的取向关系。贝氏体铁素体严重错位，而周围的奥氏体包含薄孪晶，其密度在紧密间隔的铁素体板之间的奥氏体中最高。贝氏体板可以以这样的方式穿过这些孪晶，使得孪晶区域保持在晶体学取向上，这与贝氏体铁素体板的其他区域的晶体学取向完全不同。随后，在奥氏体孪晶/贝氏体铁素体边界上析出epsilon碳化物。贝氏体铁素体的形状，应变方向和幅度估计从铁素体中继承的奥氏体孪晶的位移。所有的结果，包括奥氏体碳含量的测量，是一致的剪切模式的转变。
The morphology, crystallography, and substructure of bainitic ferrite formed in silicon alloyed high-carbon steels in the temperature range 290 to 380 °C have been studied. The bainite exhibits a plate shaped morphology, an irrational habit plane, and an irrational orientation relationship. The bainitic ferrite is heavily dislocated, while the surrounding austenite contains thin twins, the density of which is highest in the austenite between closely spaced ferrite plates. The bainite plates can cross these twins in such a manner that the twinned region remains in a crystallographic orientation, which is quite different from that of the other regions of the bainitic ferrite plates. Epsilon carbide subsequently precipitates on the austenite twin/bainitic ferrite boundaries. The bainitic ferrite shape strain direction and magnitude are estimated from displacements of austenite twins inherited in the ferrite. All results, including measurement of the austenite carbon content, are consistent with a shear mode of transformation.