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| 1 | Microstructure and electrochemical behavior of Fe-based amorphous metallic coatings fabricated by atmospheric plasma spraying显示文摘 | Z.Zhou L.Wang D.Y.He F.C.Wang and Y.B Liu | | 0，，： | 1 |
| 2 | STUDY ON DYNAMIC J-INTEGRAL OF MECHANICAL HETEROGENEOUS WELDED JOINT显示文摘Welded joint is a mechanical heterogeneous body, and mechanical heterogeneity has great effect on dynamic fracture behaviour of welded joints. In the present investigation, dynamic response curve and dynamic J-integral of practical undermatched welded joint and whole base and whole weld three-point-bend (TPB) models containing longitudinal crack are com- puted. Dynamic J-integral is evaluated using virtual crack extension (VCE) method and the computation is performed using MARC finite element code. Because of the effect of inertia, dynamic load response curve of computed model waves periodically. Dynamic J-integral evaluated by VCE method is path independent. The effect of inertia has little influence on dynamic J-integral curve. The value of dynamic J-integral of undermatched welded joint is lower than that of whole base metal and higher than that of whole weld metal. The results establish the foundation of safety evaluation for dynamic loaded welded structures. | F.Q.Tian D.Y.He X.Y.Li Y.W.Shi D.Zhang | 2004 | Acta Metallurgica Sinica(English Letters)2004，17，6： | 0 |
| 3 | HVOF热喷涂制备Fe基非晶合金涂层的微观结构和摩擦磨损性能研究显示文摘通过高速氧燃料火焰喷涂制备一种Fe59Cr12Nb5B20Si4非晶金属涂层,与商用316L不锈钢相比,以实现更低的热导率和更好的耐磨防护效果。所制备的涂层具有致密层状结构(孔隙率小于1%),有轻微的氧化发生。Fe基涂层的微观结构中具有非晶骨架并有纳米晶析出,其热导率(2.66 W/m K)显著低于不锈钢涂层(5.87 W/m K)。得益于这种微观结构,涂层硬度可达到1258±92 HV。因为涂层磨损机理的改变,涂层的摩擦系数和磨损量在200℃时上升,并在400℃时下降。涂层在室温时的磨损机理主要为疲劳磨损并伴有氧化磨损。在200℃时,由于第三粒的磨损,磨损过程加速。400℃下涂层耐磨性能的下降可能导致大面积的氧化膜的生成。 | H.H.Yao Z.Zhou K.Z.Tang Z.Tan G.H.Wang D.Y.He 王玉 | 2017 | 热喷涂技术2017，9，4： | 0 |
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