借助于图像分析仪分析了下贝氏体转变动力学。
The transformation kinetics of lower bainite was investigated with an image-analyzer.
中碳合金钢的中温转变组织只有上、下贝氏体。
The intermedium temperature microstructure of medium carbon alloy steel is upper and lower bainite.
结果表明，实验钢的组织以马氏体和下贝氏体为主。
The results show that the microstructure was mainly composed of martensite and lower-bainite.
试验证明，当焊缝组织为下贝氏体及板条马氏体双相组织时，能有效地提高焊条的抗裂性能。
The experimental result shows that the cracking resistance can be increased effectively as dual-phase structure existed in the layer consisting of lower bainite and lath martensite.
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.
电镜分析指出，复相组织疲劳性能高的原因是复相组织中的下贝氏体回火后析出短杆状碳化物，能有效地阻止疲劳裂纹的萌生及扩展。
TEM analysis reveals that the precipitation of short-bar-shaped carbides in lower-bainite can prevent effectively from initiation and propagation of fatigue cracks.
下贝氏体组织在高应力磨料磨损下比相同硬度，或稍高硬度的回火马氏体组织具有较高的耐磨性，但在低应力磨损下表现为不利的作用。
Bainite has higher abrasive wear resistance than tempered martensite with equal or higher hardness in hard abrasion, but in reverse in soft abrasion.
对一种新型非调质贝氏体鱼尾板材料在常温和低温下的拉伸性能和冲击性能进行了全面评价。
This thesis covers the overall evaluation of the tensile and impact properties of a new type of non-quenched-tempered bainite fishplate material at room temperature and low temperature.
试验表明：该钢空冷条件下即可获得准贝氏体、板条马氏体及孪晶马氏体的复合组织，且具有较好的强韧性配合。
The results indicated that the steel is composed of quasi bainite, lath martensite and twin martensite under air cooling condition, and also has better combination of strength and toughness.
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 .
研究了新型碳化物贝氏体耐磨钢不同回火温度下的组织与力学性能。
The authors researched on the microstructure of a new non-carbide bainite abrasion resisting steel under the different tempering temperatures and its dynamic performance.
微观组织观察表明，在锻造或高温轧制状态下获得了以低碳马氏体为主，含少量贝氏体和残余奥氏体的复合组织。
Observations showed that the micro-structure of the steel after forging or high temperature rolling was composed of low-carbon martensite, a little part of bainite and residual austenite.
试验结果表明，该钢在空冷条件下可获得均匀的粒状贝氏体组织，具有良好的耐回火性和较高综合力学性能。
It shows that even granular bainite structure can be obtained in the condition of air quenching. The temper resistance is better and comprehensive mechanical properties of the steel are higher.
研究了准贝氏体钢和20钢在不同温度下的组织和力学性能。
Mechanical properties and microstructure of metabainite (BZ11) and 20 steel were studied at different temperatures.
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...
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...
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