钢的组织主要由针状铁素体和马氏体两相组成。
Mainly its metallographic structure consists of acicular ferrite and martensite.
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.
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.
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.
其中针状铁素体之间细小的马氏体的存在与数量对钢的抗拉强度和低温冲击韧性起关键作用。
The existence and amount of small isolated martensite between the acicular ferrite play an important role in determining the tensile strength and low temperature impact toughness of the steels.
实验表明，适于拔丝的双相组织是在板条马氏体基体上分布着细小的铁素体岛。
Experiments show that the dual phase structure suitable to wire drawing consists of fine ferrite islands dispersed in the matrix of lath martensite.
白口铸铁按基体分为铁素体白口铸铁、铁素体-奥氏体白口铸铁、奥氏体白口铸铁、珠光体白口铸铁和马氏体白口铸铁。
According to their matrix structure, the white irons are divided into ferrite white iron, ferrite-austenite white iron, austenite white iron, pearlite white iron and martensite white iron.
铁素体迅速应变硬化和铁素体到马氏体的载荷传递使双相钢具有较高的初始应变硬化速率和较高的强度。
The higher initial strain hardening rate and higher strength of dual phase are attributed to rapid strain hardening in ferrite and the load transfer from the ferrite to martensite.
与调质回火马氏体组织不同，氧含量对铁素体-珠光体组织的疲劳性能没有明显的影响。
Unlike that of tempered martensite structure, there is little effect of oxygen content on the fatigue properties of ferrite-pearlite steel.
结果表明：试验钢的组织由细小岛状马氏体与针状铁素体为主构成，马氏体体积分数为27．6%。
The results showed that the microstructure of the steel was mainly composed of fine island-like martensite and acicular ferrite, with a 27.6% of martensite volume fraction.
与此同时，提出了生产过程中控制铁素体析出量和促进马氏体形成的具体措施。
The specific measures of controlling ferrite precipitation and promoting martensite formation were put forward.
高温回火后，马氏体的分解软化以及铁素体中位错密度减小是导致双相钢性能恶化的主要原因。
The decomposition of martensite and decrease of dislocation density in ferrite are the main reasons of deteriorating the mechanical properties of dual phase steel.
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.
本发明涉及提供一种马氏体、铁素体不锈钢无铬强力钝化液的制备方法及应用。
The invention relates to a method for preparing chromium-free intensified passivation solution for Martensitic stainless steel and ferritic stainless steel and an application thereof.
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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