| 1. | Fabrications and cutting tests of ultrafine grain diamond coated drills
超细晶粒金刚石涂层钻头的制备与实验 |
| 2. | Recent progress in new producing and welding process for ultrafine - grained steels in japan
日本关于超细晶粒钢制备与焊接新工艺的研究进展 |
| 3. | Ultrasonic peening improves the fatigue strength of welded joints in a ultra - fine grained steel
超声捶击提高超细晶粒钢焊接接头的疲劳性能 |
| 4. | Martensite transformation of an ultra - high carbon steel and grain size effect on sub - structure
超高碳钢马氏体相变及超细晶粒对亚结构的影响 |
| 5. | In this paper . monte carlo ( mc ) technique was used to simulate the grain growth in heat - affected zone of an ultra - fine grain steel
本文采用montecarlo ( mc )模拟技术对超细晶粒钢铁材料焊接haz的奥氏体晶粒长大进行了研究。 |
| 6. | The experimental data based ( ebd ) model proposed by gao was used to establish the relation between imcs and real time temperature kinetics in our simulation . mc simulation is the main methodology in our research
本文采用了gao等人提出的edb模型来建立mc模拟时间与实际时间的联系，采用edb模拟可以充分利用现有的超细晶粒钢等温实验数据。 |
| 7. | The property and micro structure of the resulting powders was studied , with emphasis on the sinterability of different w - cu powders , and the effects of properties of w - cu powders on the microstructure , the mechanical and physical properties of the sintered w - cu parts
本文对超细w - cu复合粉体的制备及烧结工艺对其烧结性能和组织结构的影响进行了研究，以探索一种制备高性能超细晶粒w - cu复合材料的新途径。 |
| 8. | W - cu composites prepared from the precipitation w - cu powder have higher sintered density , better mechanical and physical property , more homogeneous and finer microstructure than those prepared from w - cu powder by the balling - reduction method . in chapter 5 , a combination of homogeneous precipitation and ball - milling process , namely the mechano - thermochemical process was employed to prepare ultra - fine w - cu powder
其中，球磨w一cu复合粉( hp一m )压坯在1150下烧结30min后，可获得相对密度大于99 %的几乎全致密的超细晶粒w一cu复合材料， w的颗粒度小于0 . 5林m 。 |
| 9. | We apply the system to the ultra - fine grain steel welding , the simulated mean grain size in cghaz agreed well with the corresponding independent experimental data . in this paper , three factors influencing the grain growth , the steep temperature gradient in haz . the grain boundary liquid and the precipitates particle , were studied specially using mc technique
研究表明温度梯度造成的“热钉扎”现象和晶界液化现象都对靠近熔合线附近的晶粒长大有明显的阻碍作用，对最终的晶粒大小分布有重要的影响：而800mpa超细晶粒钥中的tin粒子山于溶解温度高，抑制奥氏体晶粒长大的效果十分显著。 |
