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| 1 | Strengthening mechanisms in magnesium alloys containing ternary Ⅰ,W and LPSO phases显示文摘This study was aimed at identifying underlying strengthening mechanisms and predicting the yield strength of as-extruded Mg-Zn-Y alloys with varying amounts of yttrium(Y) element. The addition of Y resulted in the formation of ternary I(Mg_3 YZn_6), W(Mg_3 Y_2 Zn_3) and LPSO(Mg_(12) YZn) phases which subsequently reinforced alloys ZM31 + 0.3 Y, ZM31 + 3.2 Y and ZM31 + 6 Y, where the value denoted the amount of Y element(in wt%). Yield strength of the alloys was determined via uniaxial compression testing, and grain size and second-phase particles were characterized using OM and SEM. In-situ high-temperature XRD was performed to determine the coefficient of thermal expansion(CTE), which was derived to be 1.38 × 10^(-5 K^(-1) and 2.35 × 10^(-5) K^(-1) for W and LPSO phases, respectively. The individual strengthening effects in each material were quantified for the first time, including grain refinement, Orowan looping, thermal mismatch, dislocation density, load-bearing, and particle shearing contributions. Grain refinement was one of the major strengthening mechanisms and it was present in all the alloys studied,irrespective of the second-phase particles. Orowan looping and CTE mismatch were the predominant strengthening mechanisms in the ZM31 + 0.3 Y and ZM31 + 3.2 Y alloys containing I and W phases, respectively, while load-bearing and second-phase shearing were the salient mechanisms contributing largely to the superior yield strength of the LPSO-reinforced ZM31 + 6 Y alloy. | N.Tahreen D.F. Zhang F.S. Pan X.Q. Jiang D.Y. Li D.L. Chen | 2018 | Journal of Materials Science & Technology2018，34，7： | 8 |
| 2 | MICROSTRUCTURAL STUDY OF Fe-Cr-Al/Al COMPOSITE COATINGS DURING OXIDATION AND SULFIDATION AT 900℃显示文摘The microstructure of a composite coating system,which was composed of an inner layer of Fe-Cr-Al and an outer layer of aluminum,was studied after it was respectively oxidized and sulfurdized at elevated temperatures. Apart from the Al2O3 scale formed on the surface,the microstructure of the composite coatings exposed at 900℃ in air for 4h was a three-layer structure. The first layer consisted of a solid solution of Cr and Fe in α aluminum and an intermetallic compound FeAl3,while the second layer was a single phase of the aluminide and the third layer still remained the same appearance as the original Fe-Cr-Al coating. The microstructural observation of the specimen tested at 850-900℃ at low oxygen pressure and high sulfur pressure for 576h revealed that the surface coatings of the specimen had transformed into a duplex structure containing an outer layer and a thicker aluminide layer beneath. X-ray diffraction results showed that the out layer was composed of Al2S3 and Al2O3 and that AlCrFe2 was the main phase composition of the aluminide layer,with a few of Al2S3 and Al2O3 accompanied. | Z.L. Zhang D.Y. Li X.Q. Dong | 2007 | Acta Metallurgica Sinica(English Letters)2007，20，2： | 2 |
| 3 | Structure and Magnetic Properties of S-doped Mn_3O_4/S Composited Nanoparticles and Mn_3O_4 Nanoparticles显示文摘Composited nanoparticles,consisting of Mn3O4,S-doped Mn3O4 and S,were synthesized by co-precipitation reaction and Mn3O4 nanoparticles were then obtained after removing the pure S from the composited nanoparticles.The Mn3O4-type phase with larger lattice constant a was formed by doping sulfur.At fixed temperatures below Curie temperature(TC),the magnetization of the S-doped Mn3O4/S composited nanoparticles was smaller than that of the Mn3O4 nanoparticles.The blocking temperature was 36.3 and 34.8 K for Sdoped Mn3O4/S composite and Mn3O4 nanoparticles,respectively.The anisotropy field of S-doped Mn3O4/S composite was determined to be about 55.3 kOe. | X. He Z.H. Wang D.Y. Geng Z.D. Zhang | 2011 | Journal of Materials Science & Technology2011，27，6： | 2 |
| 4 | The microstructure of microbiotic crust and its influence on wind erosion for a sandy soil surface in the Gurbantunggut Desert of Northwestern China显示文摘 | Y.M. Zhang H.L. Wang X.Q. Wang W.K. Yang D.Y. Zhang | 2005 | Geoderma2005，，3： | 1 |
| 5 | Transparent ceramics: Processing, materials and applications显示文摘 | S.F. Wang J. Zhang D.W. Luo F. Gu D.Y. Tang Z.L. Dong G.E.B. Tan W.X. Que T.S. Zhang S. Li L.B. Kong | 2012 | Progress in Solid State Chemistry2012，，： | 1 |
| 6 | Epitaxial SrRuO 3 /BiFeO 3 /SrRuO 3 heterostructure sputtered at low temperature显示文摘 | Q.X. Zhao J.K. Ma D.Y. Wei K.M. Wang X.H. Li X.Y. Zhang B.T. Liu | 2010 | Journal of Crystal Growth2010，，1： | 1 |
| 7 | The size dependence of structural stability in nano-sized ZrO 2 particles显示文摘 | Y.L. Zhang X.J. Jin Y.H. Rong T.Y. Hsu (Xu Zuyao) D.Y. Jiang J.L. Shi | 2006 | Materials Science & Engineering A2006，，： | 1 |
| 8 | Effects of electric parameters on properties of anodic coatings formed on magnesium alloys显示文摘 | R.F. Zhang D.Y. Shan R.S. Chen E.H. Han | 2007 | Materials Chemistry and Physics2007，，2： | 1 |
| 9 | Electrochemical corrosion behavior of carbon steel under dynamic high pressure H 2 S/CO 2 environment显示文摘 | G.A. Zhang Y. Zeng X.P. Guo F. Jiang D.Y. Shi Z.Y. Chen | 2012 | Corrosion Science2012，，： | 1 |
| 10 | Structure and Magnetic Properties of Boron-oxide and Boron-nitride Coated Iron Nanocapsules显示文摘The boron-oxide coated iron nanocapsules have been prepared by arc-discharge in a mixture of diborane and nitrogen,and then the boron-nitride coated iron nanocapsules by a subsequent annealing under a nitrogen atmosphere at 1100 ℃.After the arc-discharge,the boron-oxide coated iron nanocapsules form,which show an amorphous surface layer of B2O3 (and/or B) and a core of γ-Fe,α-Fe,FeB phases.After being annealed,part of the α-Fe phase transforms to the γ-Fe phase,and the FeB phase decomposes while the BN phase forms.The BN shell structure formed in the BN encapsulating iron nanocapsules is incomplete.Magnetic properties of the boron-oxide coated and the boron-nitride coated iron nanocapsules were compared and discussed in terms of the particles sizes,the phase components,and the surface structures. | W.S. Zhang J.G. Zheng E. Briick P.Z. Si D.Y. Geng Z.D. Zhang | 2010 | Journal of Materials Science & Technology2010，26，11： | 0 |
| 11 | Survey for viruses-particularly begomoviruses-infecting pepper crops in China显示文摘Viruses are considered the most important constraint to hot and sweet pepper (Capsicum sp.) production in China, from which nine viruses | Zhang D.Y. Liu Y. Zhuang C.R. W.S. Tsai S.L. Shih L.M. Lee Wang J.T. S.K. Green | 2006 | Agricultural Science & Technology2006，7，4： | 0 |
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