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| 1 | RECIPROCATING EXTRUSION OF IN SITU Mg_2Si REINFORCED Mg-Al BASED COMPOSITE显示文摘Mg2Si 增强了与硅的高数量合成的基于的 Mg-Al 被永久模子扔准备,然后由互给渗出挤出(RE ) 在以后合成被 homogenization 热处理处理。在 Mg2Si 的形态学和机械性质上处理的 RE 的效果合成被调查,开发新方法精制 Mg2Si 阶段并且改进它的形状。结果证明 RE 在精制 Mg2Si 阶段是很有用的。处理的 RE 传递越多,精制效果将是越多更好。而且, Mg2Si 阶段的一致分发将是更多在合成。在以后合成被 RE 为 12 张通行证处理,大多数 Mg2Si 阶段是 equiaxed 与在 20 μ m 下面的小粒的直径,并且在矩阵一致地散布了合成。机械性质合成能被 RE 处理显著地增加,并且处于当演员组状态比那高得多。作为温度上升,张力的力量被减少。为为 12 张通行证处理的合成 RE,张力的力量,收益力量,和延伸是 325.9 MPa, 211.4 MPa,并且 3.3% 在房间温度, 288.2 MPa, 207.7 MPa,并且 7.8% ,分别地在 150 ° C。与在房间温度的性质比较,张力的力量和收益力量高并且仅仅在 150 ° C 在 11.6% 和 1.8% 减少。Mg2Si 增强了基于的 Mg-Al 合成在 150 ° C 拥有好热抵抗。到热的效果的优秀抵抗被归因于高融化温度和好 Mg2Si 阶段的好热稳定性,它一致地是分布式的在合成,并且有效地妨碍滑行的谷物边界和脱臼运动。 | Z.M. Zhang C.J. Xu X.F. Guo S.Z. Jia | 2008 | Acta Metallurgica Sinica(English Letters)2008，21，3： | 8 |
| 2 | MICROSTRUCTURE OF Mg-6.4Zn-1.1Y ALLOY FABRICATED BY RAPID SOLIDIFICATION AND RECIPROCATING EXTRUSION显示文摘以便探索方法准备高张力增强 quasicrystal 的镁合金,有 50-60 的厚度的很快团结的 Mg-6.4Zn-1.1 Y 镁合金的薄片嗯被 melt 旋转获得单个压路机的设备,和薄片然后被互给处理成杆挤出和直接挤出。合金的微观结构被光显微镜和 SEM 分析,并且成分阶段被 XRD 识别。阶段转变和它的发作温度被微分热分析器(DTA ) 决定。分析结果证明为 Mg-6.4Zn-1.1Y 合金的快速的团结能禁止最容易溶解的反应,在 a-Mg 溶质答案拓宽 Zn 的稳固的溶解度,并且阻碍 Mg3 Y2 Zn3 和 MgZn2 混合物的形成,并且因此帮助从 melt 直接形成的 icosahedral Mg3 YZn6 quasicrystal。薄片的 mierostrueture 由 a-Mg 固体答案和 icosahedral Mg3 YZn6 quasierystal 组成。稠密的杆能由二通行证的互给的挤出和直接挤出由薄片制造。在在杆的薄片之间的接口能完美地被焊接并且连接。在互给的挤出和直接挤出过程期间,更多的 Mg3 YZn6 混合物被猛抛并且一致地散布了,而杆拥有从很快团结的薄片继承的好微观结构。杆包含仅仅二个阶段:是的 amagnesium 固体答案矩阵和在矩阵一致地分散的好 icosahedral Mg3 YZn6 quasicrystal。 | Z.M. Zhang C.J. Xu X.F. Guo | 2008 | Acta Metallurgica Sinica(English Letters)2008，21，1： | 7 |
| 3 | MICROSTRUCTURE OF BINARY Mg-Al EUTECTIC ALLOY WIRES PRODUCED BY THE OHNO CONTINUOUS CASTING PROCESS显示文摘在直径的约 5 公里的方向性地团结的二进制 Mg-Al 最容易溶解的合金电线被 Ohno 生产连续的扔( OCC )进程和微观结构是 examined.It 被发现电线拥有沿着它的轴的 direction.The 微观结构特征的明显的单向性的生长,这由源于竞争生长的平行圆柱的谷物组成 equiaxed 谷物在圆柱的谷物包括的哑巴 bar.Each 的头上团结了常规最容易溶解的 -Mg 和 -Mg17 | Z.M. Zhang T. Lü C.J. Xu X.F. Guo | 2008 | Acta Metallurgica Sinica(English Letters)2008，21，4： | 7 |
| 4 | EFFECT OF ANNEALING ON DAMPING CAPACITIES OF AS-CAST ZA27 ALLOY显示文摘ZA27 alloy was prepared by casting with permanent mold and then annealed at 250℃ for 1-4h. The damping capacity of the alloy was measured using a testing apparatus based on the cantilever beam technique. It was found that the as-cast ZA27 alloy possesses high damping capacity with the value of 1.3 × 10-3 at 320Hz. After annealed at 250℃ for 1h, the damping capacity decreases to 1.1 × 10-3 and then remains constant even when the annealing time is increased to 4h. The microstructure of the as-cast ZA27 alloy consists of large dendrites of Al-rich primary (?)-phases, eutectoid (?) and nonequilibrium eutectic phases (?). After annealing at 250℃ for 1h, the (?)phase disappears due to dissolution into the matrix, and the spacing between the flakes of eutectoid increases. The further increase in the annealing time has little effect on the spacing. The damping mechanism of the alloy was discussed considering the thermoelastic damping and defect damping. The value of thermoelastic damping accounts only for 7%-8% in the overall damping in cantilever beam damping measurements and the damping capacity of the ZA27 alloy came mainly from defect damping. | Z.M. Zhang J. C. Wang H.Z. Liu X.F. Guo | 2006 | Acta Metallurgica Sinica(English Letters)2006，19，5： | 3 |
| 5 | STRUCTURAL EVOLUTION OF UNDERCOOLED SINGLE-PHASE Ni-2wt%Pb MONOTECTIC ALLOY显示文摘The structural evolution of undercooled single-phase Ni-2wt%Pb monotectic alloy was systematically investigated by using the method of molten glass denucleating combined with superheating cycle. Within the achieved undercooling range e of 22 to 280K, the solidification structure undergoes three changes at 22K, 88K and 187K, respectively. With the increase of undercooling, common dendrites, the first class granular grains, nudercooled dendrites and the second class granular grains come out one after the other. Analytical results show that the granulation mechanism of the first class granular grains is owing to dendrite remelting and recrystallization, and the second is owing to dendrite break-op and recrystallization. | H.X. Zheng, H. Xie and X.F. Guo (Xi’an University of Technology, Xi’an 710048, China) | 2001 | Acta Metallurgica Sinica(English Letters)2001，14，1： | 3 |
| 6 | MICROSTRUCTURES AND PROPERTIES OF RECIPROCATINGLY EXTRUDED Mg-6.4Zn-1.1Y ALLOYS显示文摘icosahedral Mg3 YZn6 伪当 Zn 和 Y 的合适的数量被包含时,水晶的阶段能在 Mg-Zn-Y 系统合金被生产,并且准备伪水晶是可行的增强阶段的低密度的镁合金。在这篇文章,阶段成分和互给的效果,当演员组 Mg-6.4Zn-1.1Y 合金的微观结构和性质上的挤出被分析。当演员组 Mg-6.4Zn-1.1Y 合金的微观结构由α - Mg 稳固的溶液, icosahedral Mg3Y2Zn3 伪水晶,和 Mg3 YiZn2 和 MgZn2 混合物组成。在合金 reciprocatingly 为四张通行证被渗出以后,谷物被精制, Mg3 Yi Znz 和 MgZn2 阶段溶解了进矩阵,而, Mg3 YZn6 一致地猛抛并且散布。合金以这个状态拥有最好的表演;张力的力量,收益力量,和延伸是 323.4 MPa, 258.2 MPa,并且 19.7% 分别地。与当演员组合金的比较, reciprocatingly 渗出的合金的张力的力量,收益力量,和延伸分别地到 258.3% , 397.5% ,和 18 次增加。互给的挤出能实质地改进当演员组 Mg-6.4Zn-1.1 Y 合金的性质,这被结束,特别地为延伸。在互给以后的 Mg-6.4Zn-1.1Y 合金的高效挤出能被归因于分散加强和精制谷物的微观结构。 | Z.M. Zhang C.J. Xu X.F. Guo | 2008 | Acta Metallurgica Sinica(English Letters)2008，21，1： | 2 |
| 7 | Geographical origin identification of propolis using GC–MS and electronic nose combined with principal component analysis显示文摘 | H. Cheng Z.H. Qin X.F. Guo X.S. Hu J.H. Wu | 2013 | Food Research International2013，，2： | 2 |
| 8 | 查看详情显示文摘 | Ding G.B Guo Y Lü Y.Y Liu X.F. Xu L. Zhang X.Z | | 0，，： | 1 |
| 9 | PHYTOEXTRACTION OF HEAVY METALS FROM CONTAMINATED SOIL BY CO-CROPPING WITH CHELATOR APPLICATION AND ASSESSMENT OF ASSOCIATED LEACHING RISK显示文摘 | Z.B. Wei X.F. Guo Q.T. Wu X.X. Long C.J. Penn | 2011 | International Journal of Phytoremediation2011，，7： | 1 |
| 10 | Synthesis and Characterization of Tb-incorporated Apatite Nano-scale Powders显示文摘Nano-scale Tb-incorporated apatite (nano-Tb-AP) particles with different Tb contents (Tb/(Tb+Ca)) of 0%, 5%, 10% and 20% were synthesized through a simple wet chemical method in this study. The crystal structure, thermal stabilities, chemical groups, crystal morphologies and crystal sizes of the nano-Tb-AP particles were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and transmission electron microscopy (TEM), respectively. It was found that lattice constants, particle sizes, crystalline and thermal stability varied with the doped Tb contents. With the increasing of Tb content, the lattice constants, particle size, length/diameter ratio, crystalline and thermal stability of nano-Tb-AP gradually decrease. Especially, almost all the 20%Tb-AP nano particles had been decomposed at 1200 C while only a few of the decomposed products (β-TCP) were detected in the Tb-free nano apatite powders. This kind of nano-scale Tb-incorporated apatite exhibits an extremely potential clinic application because it integrates both the excellent biological functions of Tb element and apatite in human body. | L.J. Sun P.F. Ni D.G. Guo C.Q. Fang J. Wang F. Yang X.F. Huang Y.Z. Hao H. Zhu K.W. Xu | 2012 | Journal of Materials Science & Technology2012，28，9： | 0 |
| 11 | Inhibition of Electromigration in Eutectic SnBi Solder Interconnect by Plastic Prestraining显示文摘Plastic prestraining was applied to a solder interconnect to introduce internal defects such as dislocations in order to investigate the interaction of dislocations with electromigration damage. Above a critical prestrain, Bi interfacial segregation to the anode, a clear indication of electromigration damage in SnBi solder interconnect, was effectively prevented. Such an inhibiting effect is apparently contrary to the common notion that dislocations often act as fast diffusion paths. It is suggested that the dislocations introduced by plastic prestraining acted as sinks for vacancies in the early stage of the electromigration process, but as the vacancies accumulated at the dislocations, climb of those dislocations prompted recovery of the deformed samples under current stressing, greatly decreasing the density of dislocation and vacancy in the solder, leading to slower diffusion of Bi atoms. | X.F. Zhang H.Y. Liu J.D. Guo J.K. Shang | 2011 | Journal of Materials Science & Technology2011，27，11： | 0 |
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