采用埋弧焊方法，通过改变焊丝铜含量来改变焊缝金属中的铜含量，研究铜对高强度低合金钢焊缝金属韧性的影响。
In this paper, the effect of copper content on the weld metal toughness in SAW of HSLA steels was studied by changing the copper content in welding wire.
本文介绍采用高碳中铬合金钢作为磨机衬板材料，按照正交设计法优选热处理工艺参数，得到材料韧性和硬度的理想配合。
The mill Liners of high-carbon medium-chromium alloy steel have ideal coordination of toughness and hardness after optimum heat treatment determined by cross-design.
本文研究了一种高韧性的耐磨合金钢。
A wear resisting alloy steel with high toughness has been studied.
良好的耐磨性能与韧性通常很难兼之，采用高合金钢生产成本较高。
It is difficult to have both good wear resistance and good toughness. The cost of production is too high when adopt alloy steel.
Q345是广泛使用的一种普通低合金钢，其断裂韧性是工程中进行裂纹检测的重要参数。
Q345 steel, a common low carbon alloy steel, was widely used in industries. The fracture toughness of Q345 steel is an important parameter for measuring cracks in engineering.
对舞钢采用控轧控冷工艺生产的低碳微合金钢的组织形貌及其形成条件进行了分析，认为组织细化是保证低碳微合金钢良好强韧性配合的重要因素。
The microstructure characteristic and its forming conditions of the low-carbon microalloyed steels were analysed, which were produced by controlled rolling and cooling in Wuyang Iron and Steel Co Ltd.
试验研究了石油机械铸锻件常用低合金钢的显微组织结构对低温冲击韧性的影响。
An experimental investigation was made on the effect of the microstructure on the low-temperature toughness of the conventional low alloy steel used for petroleum machinery castings and forgings.
试验研究了石油机械铸锻件常用低合金钢的显微组织结构对低温冲击韧性的影响。
An experimental investigation was made on the effect of the microstructure on the low-temperature toughness of the conventional low alloy steel used for petroleum machinery castings and forgings.
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