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| 1 | Hot Cracking in AZ31 and AZ61 Magnesium Alloy显示文摘This paper examined the impact of the number of thermal cycles and augmented strain on hot cracking in AZ31 and AZ61 magnesium alloy. Statistical analyses were performed. Following observation using a scanning electron microscope (SEM), an energy dispersive spectrometer (EDS) was used for component analysis. Results showed that Al content in magnesium alloy has an effect on hot cracking susceptibility. In addition, the nonequilibrium solidification process produced segregation in Al content, causing higher liquid Mg-alloy rich Al content at grain boundaries, and resulting into liquefied grain boundaries of partially melted zone (PMZ). In summary, under multiple thermal cycles AZ61 produced serious liquation cracking. AZ61 has higher (6 wt%) Al content and produced much liquefied Mg17Al12 at grain boundaries under multiple thermal cycles. The liquefied Mg17Al12 were pulled apart and hot cracks formed at weld metal HAZ due to the augmented strain. Since AZ31 had half the Al content of AZ61, its hot-cracking susceptibility was lower than AZ61. In addition, AZ61 showed longer total crack length (TCL) in one thermal cycle compared to that in three thermal cycles. This phenomenon was possibly due to high-temperature gasification of Al during the welding process, which resulted in lower overall Al content. Consequently, shorter hot cracks exhibited in three thermal cycles. It was found the Al content of AZ31 and AZ61 can be used to assess the hot-cracking susceptibility. | C.J. Huang C.M. Cheng C.P. Chou F.H. Chen | 2011 | Journal of Materials Science & Technology2011，27，7： | 3 |
| 2 | Precipitation hardening of high-strength low-alloy steels by nanometer-sized carbides显示文摘 | C.Y. Chen H.W. Yen F.H. Kao W.C. Li C.Y. Huang J.R. Yang S.H. Wang | 2008 | Materials Science & Engineering A2008，，1： | 1 |
| 3 | Influence of Process Variables on the Structure of Mechanically Alloyed Ti_3Al-base Intermetallics显示文摘During mechanical alloying variables such as the type of mill,milling intensity,milling time,milling at-mosphere and ball-to-powder weight ratio(BPR)affect the morphology and constitution of the product.The effect of milling time,milling atmosphere and BPR on the nature of the product formed in mechanical-ly alloyed pure Ti and blended elemental binary Ti-Al,and ternary Ti-AI-Nb alloy powders was described.Mechanical alloying of pure titanium results,after long milling times,in the formation of an fcc phase.Inthe binary alloy,a solid solution of aluminum in titanium,an amorphous phase,and a fcc phase form withincreasing milling time.The fcc phase,which is probably a result of TiN formation,occurs more rapidly inair or nitrogen than in an inert atmosphere.Formation of the B2 phase in the ternary alloys depends bothon alloy composition and the milling atmosphere,with 100% formation in all atmospheres in Ti-25Al-25Nbbut not in Ti-24Al-11Nb,and an inert atmosphere favoring formation.The times required for the formationof the different phases decrease as the BPR increases;but their sequence is unaffected.Based on this infor-mation,“milling maps”which describe phase formation as a function of the BPR and milling time are con-structed.Contamination from the milling balls increased as the BPR was increased. | Chen Guohao Suryanarayana C.and Froes F.H.(Sam)Institute for Materials and Advanced Processes,University of Idaho,Moscow,ID 83843-4195,U.S.A. | 1993 | Rare Metals1993，12，4： | 1 |
| 4 | Cross-sectional observation of the intermetallic phase in a galvannealed steel显示文摘 | F.H. Kao W.C. Li C.Y. Chen C.Y. Huang J.R. Yang S.H. Wang | 2008 | Materials Science & Engineering A2008，，1： | 1 |
| 5 | Multidrug Resistance Protein-1 Affects Oxidative Stress, Endothelial Dysfunction, and Atherogenesis via Leukotriene C4 Export显示文摘 | Cornelius F.H. Mueller Kerstin Wassmann Julian D. Widder Sven Wassmann Chia Hui Chen Barbara Keuler Alexey Kudin Wolfram S. Kunz Georg Nickenig | 2008 | Circulation2008，，22： | 1 |
| 6 | 3 T MR cholangiopancreatography appearances of biliary ascariasis显示文摘 | Z.X. Ding J.H. Yuan V. Chong D.J. Zhao F.H. Chen Y.M. Li | 2010 | Clinical Radiology2010，，3： | 1 |
| 7 | Directional Gaussian Filter-based LBP Descriptor For Textural Image Classification显示文摘 | Xiangping Sun Jin Wang Ronghua Chen Lingxue Kong Mary F.H. She | 2011 | Procedia Engineering2011，，： | 1 |
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