粒状贝氏体

X射线衍射法鉴别粒状贝氏体组织

Granular bainite D is crimination by X-ray diffraction method

粒状贝氏体及粒状组织中的M-A岛不是该钢焊接热影响区过热区脆化的原因。

The M-A units in granular bainite and granular structure are not the cause of embrittlement .

三种试验用C－Mn钢热轧及轧后的加速冷却实验表明，典型组织为多边形铁素体＋粒状贝氏体；

Three experimental C-Mn steels were hot rolled and accelerated cooled .

研究发现γ中的固溶Nb和游离态B是粒状贝氏体形成的先决条件。而且B含量对获得完全贝氏体转变强化效果有一个临界值。

Study shows that solid soluble Nb in γ and free B are prerequisites for the formation of granular bainite .

采用Nb和B合金化，在热轧状态下可得到由贝氏铁素体基体和均匀分布的M/A组元组成的粒状贝氏体组织。

Granular bainitic structure formed by bainitic ferrite matrix and uniformly distributed M / A components can be obtained under hot-rolling state by means of Nb and B alloying .

（M-A）相的存在证明102钢正火态组织是粒状贝氏体。

Furthermore , the existance of ( M-A ) phase shows that the normolized microstructure is granular bainite in 102 steel .

低碳Fe-C-Mo合金贝氏体铁素体形貌演化与粒状贝氏体问题

The morphology evolution of bainitic ferrite in low carbon fe-c-mo alloys and the problem of granular bainite

低碳Mn-Nb-Ti钢中的粒状贝氏体组织

Granular Bainite Microstructures in Low Carbon Mn-Nb-Ti Steel

焊缝区和热影响区粗晶区组织均为贝氏体板条和M-A组元组成的粒状贝氏体；

The microstructure of the weld metal and the coarse-grained heat-affected zone are both granular bainite that consists of the bainite lath and the M-A constituent .

粒状贝氏体是由铁素体基体上分布着有序M-A岛构成，而粒状组织是由铁素体基体上分布着无序M-A岛构成。

Granular bainite is comprised of orderly M-A islands distribution in ferrite matrix , and Granular structure is comprised of disordered M-A islands distribution in ferrite matrix .

本文对20Cr2MoV钢粒状贝氏体在回火过程中的沉淀硬化效应及其强韧性进行了研究。

This paper presents an investigation of the precipitation hardening of a granular bainite steel ( 20Cr2MoV ) and its strength-toughness .

文中提出，粒状贝氏体中大量的富氢微孪晶马氏体M-A小岛引起的延迟微裂纹；

The results show that the crack is caused by the interaction of three factors : 1 . lots of hydrogen-rich austenite and micro-twin martensite ( M-A ) islands in granular bainite induce the delayed crack ;

通过降低钢中的碳及碳化物形成元素的含量可减少CGHAZ中粒状贝氏体的数量，从而提高钢的CGHAZ的冲击韧性。

The content of granular bainite is decreased with the decrease of carbon and carbide forming elements , and the impact toughness of CGHAZ of the steel is increased at the same time .

X80级抗大变形管线钢焊接粗晶区组织类型主要为铁素体和少量珠光体、粒状贝氏体，板条贝氏体和板条马氏体四种类型。

The results illustrated that there were mainly four types of microstructure in coarse grain zone of high-strain pipeline steel X80 : polygonal ferrite ( PF ) and a small quantity of pearlite , granular bainite , bath bainite and bath martensite .

而当t8/5超过6.8s后，粒状贝氏体含量逐渐下降，板条贝氏体逐渐粗大、平行，试样韧性又逐渐降低。

But if the t_ ( 8 / 5 ) was longer than 6.8s , it would cause the lower percent of granular bainite , and the lath bainite would be coarser and tending parallel .

国产锅炉管子钢中的粒状贝氏体及其回火分解

Granular Bainite and Its Dissolution upon Tempering in Home-made Boiler Tubes

在空冷淬火条件下，获得了粒状贝氏体。

Granular bainite is obtained under the condition of air cooling .

粒状贝氏体和粒状组织的形态与相变

Morphology and phase transformation of granular bainite and granular structure

粒状贝氏体中残余奥氏体稳定性与强韧性关系

Interrelation of Strength-Toughness and Retained Austenite Stability in Granular Bainite

而且前者M／A岛中残留奥氏体量比后者高，故粒状贝氏体回火抗力较大是由于残留奥氏体量较多的缘故。

Tempering resistance of granular bainite is higher due to more retained austenite .

以粒状贝氏体为原始组织快速加热淬火，有利于机械性能的提高。

The mechanical properties are improved by fast-heating and quenching the original granular bainite .

钢中的粒状贝氏体

A study of granular bainite in steels

粒状贝氏体的形变与断裂特征

Deformation and microfracture of granular bainite

粒状贝氏体的透射电镜研究

Study on Granular Bainite by TEM

具有仿晶界型铁素体/粒状贝氏体复相组织的大截面钢筋

Novel Grain Boundary Allotriomorphic Ferrite / Granular Bainite Duplex High Strength Reinforced Bar with Large Section

粒状贝氏体组织的疲劳性能

Fatigue behaviour of granular bainite structure

18Cr2Ni4WA钢粒状贝氏体和粒状组织于高温回火过程中碳化物的析出规律

The Precipitated Rule of Carbides at High Tempering Process in Granular Bainite and Granular Structure of 18Cr_2Ni_4MA Steel

热影响区断口表层剖面组织为粒状贝氏体，显示出粗晶区的特征。

The microstructure of fracture surface of HAZ is of granular bainite , with characteristics of coarse crystal zone .

同时，奥氏体未再结晶区变形对粒状贝氏体精细结构产生重要影响，粒状贝氏体晶团得到细化，M/A岛分布趋于杂乱、弦长减小。

And the prior deformation affects the structure of granular bainite greatly . The granular bainite grain is refined .

结果表明：在不同的焊接热循环条件下，焊接粗晶区组织主要是板条贝氏体和粒状贝氏体。

The result show that the microstructure formed after thermal cycle was mainly lath bainite and granular bainite in CGHAZ .