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贝氏体区
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  bainite region
     The results showed that the HV microhardness value at bainite region of subcritical heat treated steel lowed than that of normalized steel and V-notched impact energy was 30 J higher than that of normalized steel(12 J)and approached to that of quenched and tempered steel(40 J).
     结果表明,亚临界热处理后钢中贝氏体区HV显微硬度值低于正火钢,钢的V-型冲击功为30J,高于正火后钢V-型冲击功(12J),接近调质后的V-型冲击功(40J)。
短句来源
     Test results show that with the increase of distance from the weld fusion line the microstructure on the bainitic steel side could be divided into the following four regions. They were coarse lath bainite plus martensite region, uniform and fine granular bainite (normalized structure) region, coarser granular bainite plus a small amount of block-like ferrite region (transient region) and original granular bainite region.
     结果表明,随着离焊缝距离的增加,显微组织可分为四个区域:粗大板条贝氏体加少量板条马氏体区,均匀细小的粒状贝氏体区(正火区),较粗大粒状贝氏体加少许块状铁素体区(过渡区)和原始粒状贝氏体区
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  bainite area
     In this paper -when the temperature at bainite area is 400 ℃,with the temperature 760 ℃ at α+γ area - it was studied the forming-limit diagram(FLD) and fracture mechanism of TRIP steel .
     TRIP钢在两相区760℃退火,在贝氏体区400℃等温处理。 根据GB15825.8—1995对试样进行FLD试验,并利用扫描电镜进行断裂机理分析。
短句来源
     The results show that at the lower bainite area,meta-(carbide free) bainite can be achieved,and will be tempered reasonably which can decrease the retained austenite to a proper amount as well as increase the C content in retained austenite. The rich C content can lower the temperature of Ms and Md and raise the mechanical stability of retained austenite so as to reach the best combination of strength and toughness of the steel.
     结果表明 ,在下贝氏体区等温淬火可获得准 (无碳化物 )贝氏体 (BF +AR)组织 ,合理的回火工艺可使显微组织中残留奥氏体减少到适量 ,增加残留奥氏体中的C含量 ,降低Ms、Md点温度和提高其力学稳定性 ,从而达到最佳强韧性配合
短句来源
  bainite transformation zone
     Mechanical properties and microstructures of 0.11C-1.65Mn-0.62Si TRIP steel are studied after annealing at the inter-critical temperatures (740, 760, 780, 800 ℃) and soaking at the bainite transformation zone (370, 400, 430°C) respectively.
     在两相区不同温度(740、760、780、800℃)退火和在贝氏体区不同温度(370、400、430℃)等温处理,研究其对0.11C 1.65Mn 0.62Si的钢组织和力学性能的影响.
短句来源
     The study on TTT structure indicated that the austenite transferred into pearlite at upside of austenite bay in TTT diagram and transferred into granular bainite and lower bainite in bainite transformation zone.
     等温转变的组织结构研究表明 ,奥氏体在河湾区上部转变为珠光体 ,在贝氏体区转变为粒状贝氏体和下贝氏体
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  “贝氏体区”译为未确定词的双语例句
     Mechanical Properties of Martensite and Bainite of 40CrMnSiMoVA Steel after Isothermal Quenching
     40CrMnSiMoVA钢马氏体区和贝氏体区等温淬火的组织与强韧性
短句来源
     Between the transformation zone of ferrite and bainite,there is a 60-80 ℃ metastable austenite zone,which provides a "coiling window".
     铁素体区与贝氏体区之间有60~80℃的奥氏体稳定区,可作为“卷取窗口”;
短句来源
     CCT Curve and Deformation in Bainitic Transformation Region of a Cr-Mo-V Steel
     一种铬钼钒钢的CCT曲线及贝氏体区形变研究
短句来源
     In this paper, 3Cr-1Mo-0.25V steel was selected for experiments. The critical points, the CCT curve and the effects of deformation in bainitic transformation region on the microstructure and mechanical property of the steel were investigated by using of Gleeble-3500 thermal simulator, optical microscope, SEM, TEM and hardness measurement.
     本文以 3Cr-1Mo-0.25V 钢为实验材料,利用 Gleeble-3500 热模拟试验机,测定了该钢的转变点和 CCT 曲线,并对该钢在贝氏体区形变进行了研究。 采用金相、扫描电镜、透射电镜、硬度等实验方法对处理后的试样进行了组织和性能的分析。
短句来源
     When deformation was performed after bainitic transformation, with the deformed temperature decreasing or the reduction increasing, the lath character of bainitic ferrite is evident and the hardness of the specimen increases.
     当冷速小于 15℃/s 时获得贝氏体组织。 贝氏体区形变对贝氏体相变及贝氏体组织的影响表现在:在贝氏体相变后形变,随形变温度的降低、形变量的增加,贝氏体铁素体条片状特征趋于明显,硬度增加。
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Study was made of the microstructural morphology and phase transformation mechanism of the "ferrite+islands" formed either as granular bainite in upper region of temperature range of bainitic transformation or as so called "granular structure" in temperature range of pro-eutectoid transformation in the low carbon alloy steels. The granular bainite stands out in surface relief during its transformation Its ferrite grows up longitudinally and form parallel laths The K-S orientation relationship is kept between...

Study was made of the microstructural morphology and phase transformation mechanism of the "ferrite+islands" formed either as granular bainite in upper region of temperature range of bainitic transformation or as so called "granular structure" in temperature range of pro-eutectoid transformation in the low carbon alloy steels. The granular bainite stands out in surface relief during its transformation Its ferrite grows up longitudinally and form parallel laths The K-S orientation relationship is kept between ferrite and austenite The morphology of its islands appears as the shape of short lath and with a tendency of being parallelly distributed in the bainite-ferrite matrix. The granular structure does not stand out in surface relief in the formation of equiaxial ferrite. It's ferrite can grow across the grain boundary of parent phase, and has no strict orientation relationship with parent phase The shape of the islands is irregular, and its arrangement on the matrix is also irregular. The grain boundary of austenite couldn't be revealed clearly Except the difference of the transformation temperature, the granular structure possessed Widmanstatten ferrite is similar to the granular bainite in characteristics. Finally, the models of the growth of granular bainite and granular structure are suggested.

本文研究了低碳合金钢奥氏体在连续冷却或等温转变过程中形成的组织形态和转变机理。结果表明在中温贝氏体区得到“粒状贝氏体”组织,在先共析转变区得到“粒状组织”。两者都有“铁素体基体+小岛”形貌。但前者有表面浮凸现象,铁素体呈长条状,与母相维持K-S关系,惯习面为{111}_γ,小岛也多星长条状平行排列。后者无表面浮凸,铁素体呈无规则形状,与母相无严格位向关系,小岛亦呈无规则排列。然而这两种组织都是由扩散型相变机制形成的。最后,提出了形成这两种组织的相变模型。

An observation under TEM was made of the (M-A) structure and "bamboo shaped" bainite in the isothermally quenched ultra high strength steels containing Si after the isothermal transformation The retained austenite in the isothermal structure of bainite region at temperature≥300℃ is often found in the M-A and "bamboo shaped" bainite In the bainite formed isothermally at 180, 300, 320 and 420℃, the ε-carbide is observed. The type of carbide in decomposition products is related to the distribution and morphology...

An observation under TEM was made of the (M-A) structure and "bamboo shaped" bainite in the isothermally quenched ultra high strength steels containing Si after the isothermal transformation The retained austenite in the isothermal structure of bainite region at temperature≥300℃ is often found in the M-A and "bamboo shaped" bainite In the bainite formed isothermally at 180, 300, 320 and 420℃, the ε-carbide is observed. The type of carbide in decomposition products is related to the distribution and morphology of retained austenite. The ε-carbide may precipitate along the austenite side of martensite/austenite boundary.

等温淬火的含Si超高强度钢往往存在(M-A)组织和转变不完全的贝氏体组织。在贝氏体区等温组织中的残余奥氏体多存在于前两种组织中。碳化物的类型与残余奥氏体的分布、形态有关。在180,300,320和420℃下等温形成的贝氏体中均存在有ε碳化物。马氏体α或贝氏体,奥氏体A和ε碳化物间的取向关系为碳化物可从α/A界面A侧析出。

In the present paper,an investigation of the microstructure and mechanical properties of 40CrMnSiMoVA steel after isothermal qucnching at 190℃ and 300℃ is introduced.The mechanism of strengthening and toughening of the steel is also discussed.It has been proved that the mechanical propertics ob- tained by isothermally quenching the steel at 300℃ is substantially superior to that obtained at 190℃.

本文研究了40CrMnSiMoVA 钢在马氏体区(190℃)和贝氏体区(300℃)等温淬火后的组织与强度、塑性、韧性、多次冲击疲劳性能及周期强度间的关系。探讨了其强韧化的机理,证明贝氏体区等温淬火后在综合力学性能上具有明显的优越性。

 
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