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| 1 | Effects of Annealing on Microstructure, Mechanical and Electrical Properties of AlCrCuFeMnTi High Entropy Alloy显示文摘The multi-component AlCrCuFeMnTi high entropy alloy was prepared using a vacuum arc melting process. Serial annealing processes were subsequently performed at 590 ℃, 750 ℃, 955 ℃ and 1 100 ℃ respectively with a holding time of 4 h at each temperature. The effects of annealing on microstructure, mechanical and electrical properties of as-cast alloy were investigated by using differential thermal analysis(DTA), X-ray diffraction(XRD), scanning electron microscopy(SEM) and transmission electron microscopy(TEM). The experimental results show that two C14 hexagonal structures remain unchanged after annealing the as-cast AlCrCuFeMnTi alloy specimens being heated to 1 100 ℃. Both annealed and as-cast microstructures show typical cast-dendrite morphology and similar elemental segregation. The hardness of alloys declines as the annealing temperature increases while the strength of as-cast alloy improves obviously by the annealing treatment. The electrical conductivities of annealed and as-cast alloys are influenced by the distribution of interdendrite regions which is rich in Cu element. | NONG Zldsheng NONG Zldsheng ZHU Jingchuan YANG Xiawei YU Hailing LAI Zhonghong | 2013 | Journal of Wuhan University of Technology(Materials Science)2013，28，6： | 5 |
| 2 | Study on Laser Welding of Al Composite显示文摘The effects of laser welding parameter on strength of welded joints were studied. The mechanism for loss of joint strength was analyzed. It was pointed out that an important factor affecting joint strength is the reaction between matrix and reinforced phase. On the basis of this, the concept of critical St activity a[si]min was proposed. Using appropriate welding parameters and Si activity, high quality laser welded joints in an aluminum matrix composite SiCw/6061Al can be Successfully obtained. | Jitai NIU Zhonghong LAI MuZhen WANG Liming LIU and Lin WU National Key Laboratory of Advanced Welding Production Technology, Harbin institute of Technology, Harbin 150001, China | 2001 | Journal of Materials Science & Technology2001，17，1： | 3 |
| 3 | First-principles study on the mechanical properties of vanadium carbides VC and V 4 C 3显示文摘 | Hailiang Liu Jingchuan Zhu Yong Liu Zhonghong Lai | 2008 | Materials Letters2008，，17： | 1 |
| 4 | Residual elastic stress-strain field and geometrically necessary dislocation density distribution around nano-indentation in TAI5 titanium alloy 显示文摘 | He Dang Zhu Jingchuan Lai Zhonghong et at | 2013 | Transactions of Nonferrous Metals Society of China2013，，23： | 1 |
| 5 | For- mation of nanometer coherent structures during spinodal de- composition and ordering coexistence phase transformation in Fe-24A1 alloys显示文摘 | Zhao Rongda Zhu Jingchuan Lai Zhonghong | 2012 | J Shanghai Jiaotong University (Sci)2012，17，4： | 1 |
| 6 | Fabrication of ZrO2-NiCr functionally graded material by powder metallurgy显示文摘 | Zhua Jingchuan Lai Zhonghong | 2001 | Mater Chem Phys2001，68，： | 1 |
| 7 | Fabrication of Zro2-Nicr functionnally graded material(FGM) by power metallury 显示文摘 | Zhu Jingchuan Lai Zhonghong Yin Zhongda | 2001 | Mater Chem Phys2001，68，13： | 1 |
| 8 | Microstructure of a Mo-Si-C-N multi-layered anti-oxidation coating on carbon/carbon composites by fused slurry显示文摘A Mo-Si-C-N multi-layered anti-oxidation coating was in-situ fabricated by introducing nitrogen atmosphere during the fused sintering of Mo-Si slurry pre-layer on carbon/carbon composites. The phase composition and microstructure of the Mo-Si-C-N coating were characterized by X-ray diffractometry, optical microscopy, scanning electron microscopy with energy dispersive spectroscopy, X-ray photoelectron spectroscopy, and transmission electron microscopy. The Mo-Si-C-N coating exhibited a three-layered structure. Besides the MoSi2/Si main-layer and the SiC bonding-layer, a surface layer of about 10 μm in thickness was synthesized on the coating surface. The surface layer mainly consisted of SiC nanowires and contained some Si3N4 and Si phases. SiC nanowires of 10 to 200 nm in diameter presented a terrace and distortion structure. Transmission electron microscopy indicated that the SiC nanowires grew along the preferred <111> direction. During oxidation test, SiC nanowires transmuted into SiO2 glass, which can play an important role in improving the oxidation resistance of C/C composites. | LAI Zhonghong MENG Songhe ZHU Jingchuan JEON Jaeho | 2009 | Rare Metals2009，28，5： | 1 |
| 9 | Characterization of precipitation microstructure and properties of 7150 aluminium alloy显示文摘 | Xigang Fan Daming Jiang Qingchang Meng Zhonghong Lai Xinmei Zhang | 2006 | Materials Science & Engineering A2006，，1： | 1 |
| 10 | MICROSTRUCTURE AND THERMAL STRESS RELAXATION OF ZrO_2-Ni FUNCTIONALLY GRADED MATERIAL显示文摘MICROSTRUCTUREANDTHERMALSTRESSRELAXATIONOFZrO_2-NiFUNCTIONALLYGRADEDMATERIAL￥ZhuJingchuan;YinZhongda;LaiZhonghong;LiJian(Scho?.. | Zhu Jingchuan Yin Zhongda Lai Zhonghong Li Jian(School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001) | 1996 | 中国有色金属学会会刊:英文版1996，6，4： | 1 |
| 11 | Microstructure and Mechanical Properties of ZrO_2-Ni Functionally Gradient Material显示文摘The fabrication. microstructure and mechanical properties of ZrO2-Ni functionally gradient materials (FGM ) have been studied. FGM as well as non-FG M of ZrO2-Ni system was developed by powder metallurgical process. X-ray diffractometer (XRD ). electron probe microanalyzer (EPMA), scanning electron microscope (SEM ) and optical microscope were employed to investigate the crystalline phases. chemical composition and microstructure Experimental results demonstrate that the composition and microstructure of ZrO2-Ni FGM have the expected gradient distribution. There are no distinct interfaces in the FGM due to the gradient change of components. that is, the constituents are continuous in microstructure everywhere. Moreover, Vickers hardness and flexural strength were measured for the common composites as a function of composition. It is made clear that the mechanical properties of the FGM vary corresponding to the constitutional changes as | Jingchuan ZHU Zhongda YIN and Zhonghong LAI(Dept. of Metals and Technology, Harbin Institute of Technology, Harbin, 150001. China) | 1994 | Journal of Materials Science & Technology1994，10，3： | 1 |
| 12 | Fabrication of ZrO2-NiCr functionally graded material by powder metallurgy 显示文摘 | ZHU Jingchuan LAI Zhonghong YIN Zhongda | 2001 | Mater Chem Phys2001，68，13： | 1 |
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