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| 1 | Development of a high-strength Mg alloy with superior ductility through a unique texture modification from equal channel angular pressing显示文摘In the current study,a homogenous ultra-fine grained microstructure with average grain size of 1.0μm is achieved in the Mg-Zn-Ca-Mn alloy through the reduplicative equal channel angular pressing(ECAP)at 300℃,and the mechanical properties are remarkably improved,with room-temperature yield strength of 269.6 MPa and elongation of 22.7%.The twinning deformation results in a discontinuous recrystallization behavior in the initial stage of ECAP.With further deformation,the continuously dynamic recrystallization contributes to an obvious grain refinement effect.The activation of non-basal slip system leads to the formation of a unique basal texture,which is related to the elevated ECAP temperature and the decreased grain size.Both grain refinement and texture modification derived from ECAP process result in the increase of yield strength,while the cracked secondary phase particles are beneficial to the enhanced ductility,through reducing the stress concentration and hindering premature failure. | L.B.Tong J.H.Chu W.T.Sun Z.H.Jiang D.N.Zou S.F.Liu S.Kamado M.Y.Zheng | 2021 | Journal of Magnesium and Alloys2021，9，3： | 8 |
| 2 | A comparison study of Ce/La and Ca microalloying on the bio-corrosion behaviors of extruded Mg-Zn alloys显示文摘The influences of Ca and Ce/La microalloying on the microstructure evolution and bio-corrosion resistances of extruded Mg-Zn alloys have been systematically investigated in the current study.Compared with single Ca or Ce/La addition,the Ca-Ce/La cooperative microalloying results in an outstanding grain refinement,because the fine secondary phase particles effectively hinder the recrystallized grain growth.The coarse Ca2Mg6Zn3 phases promote the formation of Ca3(PO4)2 or hydroxyapatite particles during the immersion process and accelerate the dissolution of the corrosion product film,which destroys its integrity and results in the deterioration of anti-corrosive performance.The Ce/La elements can be dispersed within the conventional Mg7Zn3 phases,which reduce the internal galvanic corrosion between Mg matrix and the secondary phases,leading to an obvious improvement of corrosion resistance.Therefore,the Ca-Ce/La cooperative microalloying achieves a homogenous fine-grained microstructure and improves the protective ability of surface film,which will pave a new avenue for the design of biomedical Mg alloys in the coming future. | J.H.Chu L.B.Tong Z.H.Jiang D.N.Zou Q.J.Wang S.F.Liu H.J.Zhang | 2020 | Journal of Magnesium and Alloys2020，8，4： | 5 |
| 3 | Electroless Ni-Sn-P coating on AZ91D magnesium alloy and its corrosion resistance显示文摘 | W.X.Zhang Z.H.Jiang G.Y.Li Q.Jiang and J.S.Lian | | 0，，： | 1 |
| 4 | THERMAL-CONDUCTIVITY MEASUREMENTS FOR FILLING MATERIALS FOR SLIDING GATES AND THEIR EFFECTS ON FREE- TAPPING PERFORMANCE OF STEEL LADLE显示文摘The thermal conductivities of different typical species filling materials for sliding gate systems for steel ladles were measured using a hot wire technique, and the relationships between thermal conductivity and temperature were regressed. The factors affecting thermal conductivity were analyzed by using variance analysis for a perpendicular experiment. The effects of thermal conductivity on sliding gate free tapping were studied, and it was revealed that decreasing the thermal conductivity of the filling materials is beneficial in enhancing the rate of free tapping for sliding gates. | Z.H.Jiang 1) ,Y.He 2) ,X.L.Jiang 1) , G.J.Han 1) and S.S.Rui 1) 1) Department of Iron & Steel Metallurgy, School of Material and Metallurgical Science, Northeastern University, Shenyang 110006, China 2) Institute of Metal Research,T | 1999 | Acta Metallurgica Sinica(English Letters)1999，12，5： | 1 |
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