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- Keywords ultrafine grain steel;thermal cycle curve;HAZ;grain size; 超级钢;热循环曲线;焊接热影响区;晶粒尺寸;
- DISCUSSION ON APPROACHES TO OBTAIN ULTRAFINE GRAIN SIZE FOR LOW CARBON STEEL 低碳钢晶粒超细化方法初探
- Keywords Ultrafines Grain size Sintering; 微粉;粒度;加入量;烧结;
- ultrafine grain size 超细晶粒度
- There is a general decrease in grain size upward. 粒度一般是向上递减的。
- In the meantime some suggestions were given on the selection of the concentration, grain size an hardness of the ultrafine corundum abrasive wheels. 同时指出了使用中应注意的磨料浓度、粒度、硬度选择等问题;
- Rough and loose structure for rough grain size. 接触面积大时用粗松的组织。
- Fine grain size for the smaller contact area. 接触面积小时用细的粒度。
- Coarse grain size for the larger contact area. 接触面积大时用粗的粒度。
- Grain size of the sample had been measured. 降尘量和粒度参数值在尘暴前期和后期都呈现不同特征。
- The grain size distribution was bimodal as a whole. 尘暴降尘的粒度基本呈双峰态分布。
- The microstructure prediction model of the ultrafine grain steel was constructed. 在此基础上建立了相应的超细晶粒钢组织预测模型。
- The methods to obtain ultrafine grain in new generation steel were investigated. 探索了在新一代钢中获得超细晶粒的方法。
- Its equidimensional grain size tends to mask the laminae. 它的粒度的均一往往会掩盖了纹层层理。
- The thermally stimulated currents (TSC) and the ferroelectric phase transition of the ferroelectric ultrafine grain were investigated. 研究了铁电微晶粉粒的热刺激电流及其铁电相变。
- Grain size had some effect on the rate of crack propagation. 晶粒尺寸大小对裂纹扩展速率也有影响。
- Technology of Equal-channel Angular Pressing(ECAP) is one of new important processing methods to acquire ultrafine grain. 等通道转角挤压技术(ECAP)是一种新型获得超细晶粒的重要制备方法之一,同时也是提高材料力学性能的根本途径之一。
- Type O steel shall be supplied without specific grain size control. 0类型的钢没有特殊的颗粒尺寸控制。
- A new continuous equal channel angular pressing(ECAP) technique was developed and successfully produced unlimited length of pure aluminum with ultrafine grain. 探讨一种连续等通道角挤压(ECAP)新技术,实现了纯铝的无限长度连续大变形,制备出具有超细晶结构的金属材料。
- The apparent permittivity of Barium Titanate ultrafine grain in the ferroelectric phase transformation range has been measured with three different means. 用3种不同方法测量了钛酸钡微晶粉料在铁电相变过程中表观介电常数的变化。