铁需要从面心立方体奥氏体结构转变为体心立方体铁素体结构，但是铁素体只能容纳固溶体状态的0.02%的碳。
The iron wants to change from the FCC austenite structure to the BCC ferrite structure, but the ferrite can only contain 0.02% carbon in solid solution.
在回火过程中，贝氏体中的奥氏体以扩散转变方式分解为铁素体和渗碳体。
During the tempering process, the austenite in bainite decomposed into ferrite and cementite by diffusion transformation.
一般认为，珠光体转变得到铁素体和渗碳体的机械混合物，而且存在领先相。
It is generally considered that the simple mechanical mixture of ferrite and cementite is gained in the pearlite transformation and there is prevenient phase in this process.
有魏氏组织的试样较呈等轴铁素体的试样有更高的冲击韧性和更低的韧脆转变温度。
The specimens with Widmanstatten structure have higher impact strength and lower ductile-brittle transition temperature than those with equiaxial granular ferrite structure.
以相变动力学为基础，研究了奥氏体向铁素体、珠光体和贝氏体转变的温度和相变体积分数的计算方法。
On the basis of transformation kinetics, the transformation of austenite to ferrite, austenite to pearlite, austenite to bainite was investigated.
结果表明，在多道次变形过程中，部分奥氏体通过形变诱导相变转变为铁素体；
The results show that some ferrite can form through deformation-induced ferrite transformation during multi-pass deformation.
合理控制低合金高强钢焊缝中针状铁素体的转变行为，对获得理想的焊缝性能具有重要意义。
It is of great importance for obtaining the perfect welding properties to control the AF transformation behavior reasonably in HSLA steel weld.
随着冷却速率的增加，实验钢的显微组织由铁素体+粒状贝氏体逐步转变为板条贝氏体+板条马氏体及板条马氏体组织；
The microstructure of the steel transforms from ferrite plus granular bainite, lath bainite plus lath martensite and then to lath martensite successively with the increasing of cooling rate;
碳氮化物析出相有弥散析出、相间析出、纤维状析出及等温转变温度较低时，碳氮化物在铁素体晶内沿位错处弥散析出等形态。
It has been found that interphase precipitation, fibrous precipitation, precipitation on dislocation, precipitation from supersaturated ferrite at lower isothermal transformed temperature.
试验表明，铸态铁素体球铁硅含量增加时，脆性转变温度也相应提高。
Test shows that the embrittlement temperature will increase with increase of the Si content.
计算表明，变形能的加入可以使临界核胚减小，并且提高铁素体开始转变的温度。
Results show that the critical nucleus will be reduced and the initial transformation temperature of ferrite improved with increase of the deformation store energy.
计算表明，变形能的加入可以使临界核胚减小，并且提高铁素体开始转变的温度。
Results show that the critical nucleus will be reduced and the initial transformation temperature of ferrite improved with increase of the deformation store energy.
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