贝氏体铁素体在贫碳的奥氏体中形核。
依靠随机涨落，形成贫碳区，贝氏体铁素体在贫碳的奥氏体中形核。
Carbon-poor area forms by way of random fluctuation and carbon atom diffusion. Bainitic ferrites nucleate in carbon-poor austenite.
依靠随机涨落，形成贫碳区，贝氏体铁素体在贫碳的奥氏体中形核。
Carbon-poor area forms by means of random fluctuation and carbon atom diffusion. Bainitic ferrites nucleate in carbon-poor austenite.
经适当热处理，获得贝氏体铁素体板条与奥氏体薄膜交替排列的奥氏体-贝氏体双相组织。
After proper heat treatment the steel will have a dual phase structure of austenite and bainite. arranged alternatively in the form of lath ferrite and thin film austenite.
论证了贝氏体铁素体在含碳量小于0.3％时为体心立方结构，碳量大于0.3％后呈体心正方结构。
The bainitic ferrite is BCC lattice when the carbon content in it is below 0.3% and it is BCT lattice when the carbon content is over 0.3%.
与马氏体组织相比，由贝氏体铁素体和残余奥氏体组成的准贝氏体组织，其光滑及缺口疲劳强度均较高。
The results shows that the smooth and notch fatigue strength of the meta-bainite consisting of bainite ferrite and retained austenite is higher than that of martensite.
使用TEM研究了钢中贝氏体的精细结构及碳化物的形貌与分布，加入微量元素使贝氏体铁素体组织明显细化。
The fine structure of bainite and the morphology and distribution of carbides in steels were investigated with TEM.
GD钢中下贝氏体是由一束贝氏体铁素体片条组成的，而每一片条又是由多个贝氏体相变基元组成。下贝氏体中普遍存在中脊。
It is found that the lower bainite consists of packets of bainite ferrite plates, each plate is composed of several bainite transformation units, bainite midrib exists generally.
接合部组织由晶界铁素体及晶内上贝氏体组成。
Themicrostructure of bonded zone consist of upper bainite and grain boundary ferrite.
结果表明，热轧后能够获得多边形铁素体、粒状贝氏体和大量稳定的残留奥氏体组织。
The results show that polygonal ferrite, granular bainite and larger amount of stabilized retained austenite can be obtained after hot rolling.
重点介绍了按金相组织分类的贝氏体、马氏体类合金结构钢和铁素体、马氏体、奥氏体类不锈钢合金焊丝的生产工艺。
It mainly introduces the production processes of alloy structural steel welding wires of bainite and martensite and stainless steel welding wires of ferrite, martensite and austenite.
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.
本文概述了非调质钢的开发和应用现状，其中包括铁素体一珠光体、贝氏体以及马氏体非调质钢。
This paper gives a survey of development and application of microalloyed engineering steels, including those with ferritic -pearlitic, bainitic, and martensitic structures.
SS400的显微组织为铁素体、珠光体和少量的贝氏体。
The microstructures of super-steel SS400 were composed of ferrite, the pearlite and small amount of bainite.
试验钢由针状铁素体和少量块状铁素体组成，焊缝为典型的针状铁素体组织，焊接热影响区粗晶区以粒状贝氏体为主。
The toughness of weld metal is the highest while the coarse grained region in the HAZ is the lowest because of welding thermal cycle and formation of brittle microstructure.
通过冷却速度的控制实现钢材内部铁素体、贝氏体、马氏体不同的相组成和铁素体晶粒尺寸。
Different ferrite grain size and combination of ferrite, bainite and martensite phases were obtained according to the control of cooling rate.
在较大焊接热输入条件下焊接，焊缝金属产生粗大先共析铁素体、过热区产生粗大粒状贝氏体，焊接接头低温冲击韧性因此降低。
The coarse primary ferrite appeared in weld metal, and coarse bainite appeared in heat-affected zone under larger heat input welding condition, which caused low...
其经预先退火得到全部铁素体组织，然后等温淬火得到铁素体和贝氏体双相组织的基体。
The ferrite is obtained first through annealing, then biphase structure of ferrite and bainite is obtained through isothermal quenching.
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，该低碳贝氏体钢的微观组织主要为板条贝氏体、粒状贝氏体、准多边形铁素体及针状铁素体的复合组织。
The results indicate that the microstructure of specimen is mainly lathe bainite, granular bainite, quasi-polygonal ferrite and acicular ferrite.
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;
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;
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