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| 1 | STUDY OF THE INJURY OF THE Ar^+ INJECTION Si LAYER BY THE USE OF XRD AND ELLIPSOMETER显示文摘The Ar+ injection layer into silicon can be described as inhomogeneous absorption medium wafer. The distribution of the stress, strain, strain energy in the injury layer has been studied utilizing XRD. And the average ellipsometer is used here to investigate the optical constant and degree of injury of the ion injection injury wafer. | G.Q.Wang,F.F.Jiang and X.N.Wang Basic Lessons Department, Shengyang University, Shengyang 110044, China | 1999 | Acta Metallurgica Sinica(English Letters)1999，12，5： | 1 |
| 2 | Hierarchical structure and deformation behavior of a novel multicomponent β titanium alloy with ultrahigh strength显示文摘Based on the general [Mo] equivalent criterion and d-electron orbital theory, a new ultrahigh-strength βtitanium alloy with eight major elements(Ti-4.5Al-6.5Mo-2Cr-2.6Nb-2Zr-2Sn-1V, TB17) for industrial applications was developed. An ingot of five tons was successfully melted by thrice vacuum consumable arc melting. The microstructure and elements partitioning of different conditions were investigated systematically. The results suggest that the hierarchical structures of micro-scale first α phase(αf), nano-scale secondary α phase(αs), and ultrafine FCC substructures can be tailored by solution plus aging(STA) heat treatment. The lateral and epitaxial growth of αfphase promotes the HCP-α to FCC substructure transformation with the help of elements partitioning during the aging process. Moreover, the element V, generally regarded as β stabilizer, is found to mainly concentrate in the Al-rich αfphase in this study probably due to its relatively lower content and the strong bonding energy of Al-V. The hierarchical structure has a strong interaction with dislocations, which contributes to achieve a superhigh strength of 1376 MPa.In addition, the plastic strain is partitioned in the multi-scale precipitates(such as the α and FCC substructures) and β matrix, resulting in a considerable plasticity. TEM observation demonstrates that high density entangled dislocations at interfaces and mechanical twins exist in the STA sample after tensile test. It can be deduced that both dislocation slipping and twinning mechanisms are present in this alloy.Therefore, TB17 alloy can serve as an excellent candidate for structural materials on aircrafts that require high strength and lightweight. | X.Li X.N.Wang K.Liu G.H.Cao M.B.Li Z.S.Zhu S.J.Wu | 2022 | Journal of Materials Science & Technology2022，，12： | 1 |
| 3 | Effective cellular vaccines generated by in vitro or in vivo modification of tumor cells using gene transfer approaches for cancer immunogene therapy显示文摘Tumor cells escape host immune surveillance bydown-regulation of MHC and/or co-stimulatorymolecules. Anti-tumor immune responses | Y.J.Guo F.Shen T.P.Xie X.Che Z.F.Cui L.Shi J.Ma S.G.Wu X.N.Wang G.L.Liu Y.Liu H.Wang H.L.Huang L.X.Wei J.Zhao J.Trojan A.Ly D.Anthony M.C.Wu | 1997 | 中国实验血液学杂志1997，5，3： | 0 |
| 4 | Formation of intermetallic phases in unrefined and refined AA6082 Al alloys investigated by using SEM-based ultramicrotomy tomography显示文摘The spatial arrangement,distribution and morphology of Fe-bearing intermetallics in AA6082 alloys depends on the manufacturing process of the alloy and thus influences the macroscopic properties.Here,the microstructure of a near industrial scale casting AA6082 Al alloy fabricated by:(a)direct chill casting,(b)Al-5 Ti-1 B grain refiner addition and(c)intensive melt shearing has been investigated by threedimensional visualization using SEM-based serial ultra microtomy tomography.The formation sequence of phases in AA6082 alloys is generally categorized into four stages:formation ofα-Al grains,Fe-bearing intermetallics,Mg_(2)Si phase,and eutectic rosettes.Results of three-dimensional visualization of the microstructure indicated that TiBparticles not only could nucleate Fe-bearingβ-intermetallics,but also could provide substrate for the formation of Fe-bearingα-intermetallics and Mg_(2)Si.A further deep analysis reveals that the essential condition for the formation of secondary phases such as Fe-bearing intermetallics and Mg_(2)Si phase is the build-up of a supersaturated solute front at theα-Al solid-liquid interface irrespective of the specific nucleation site.In addition,the results indicate that grain refinement processing causes the severe interconnectivity of Fe-bearingα-intermetallics.However,the intensive melt shearing is a better manufacturing process because the intermetallics are more evenly distributed and refined than with the addition of the grain refiner,thereby improving the properties of the alloy. | J.M.Yu T.Hashimoto H.T.Li N.Wanderka Z.Zhang C.Cai X.L.Zhong J.Qin Q.P.Dong H.Nagaumi X.N.Wang | 2022 | Journal of Materials Science & Technology2022，，25： | 0 |
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