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HRTEM studies of aging precipitate phases in the Mg-10Gd-3Y-0.4Zr alloy王冬舒1,李德江1,谢艳才1,曾小勤21. National Engineering Research Center of Light Alloys Net Forming,School of Materials Science and Engineering,Shanghai Jiao Tong University2. State Key Laboratory of Metal Matrix Composites,Shanghai Jiao Tong University摘 要:Rare-earth(RE) element addition can......
HRTEM studies of aging precipitate phases in the Mg-10Gd-3Y-0.4Zr alloy王冬舒1,李德江1,谢艳才1,曾小勤21. National Engineering Research Center of Light Alloys Net Forming,School of Materials Science and Engineering,Shanghai Jiao Tong University2. State Key Laboratory of Metal Matrix Composites,Shanghai Jiao Tong University摘 要:Rare-earth(RE) element addition can......
is added into Mg-1.5LPC-0.4Zr alloy, and the volume fraction of precipitate phases also increases. The cubic-shaped β-Mg24Y5 precipitate phases were also observed at grain boundaries in Mg-6Y-1.5LPC-0.4Zr alloy. The distribution of prismatic shaped β′ phases and cubic shaped β-Mg24Y5 precipitate phases in Mg matrix may account for the remarkable enhancement of tensile strength of Mg-Y-LPC-Zr alloy......
Precipitate Phases in an 11% Cr Ferritic/Martensitic Steel with Tempering and Creep ConditionsXiao-Ling Zhou,Yin-Zhong Shen,Zhi-Qiang XuSchool of Mechanical Engineering, Shanghai Jiao Tong University摘 要:Precipitates in an 11% Cr ferritic/martensitic steel containing Nd with tempering and creep conditions were investigated using transmission electron......
temperatures.In Mg-7Gd-5Y-1Nd-0.5Zr alloy,the β precipitate phase was assumed to be one of the main strengthening phases in peak-aged samples.This study aimed to determine the crystal structure...Characterization of β precipitate phase in Mg-7Gd-5Y-1Nd-0.5Zr alloy李婷1,张奎1,杜志伟2,李兴刚1,李永军1,马鸣龙1,袁家伟11. State Key Laboratory for Fabrication and Processing of Nonferrous Metals,General Research......
temperatures.In Mg-7Gd-5Y-1Nd-0.5Zr alloy,the β precipitate phase was assumed to be one of the main strengthening phases in peak-aged samples.This study aimed to determine the crystal structure...Characterization of β precipitate phase in Mg-7Gd-5Y-1Nd-0.5Zr alloy李婷1,张奎1,杜志伟2,李兴刚1,李永军1,马鸣龙1,袁家伟11. State Key Laboratory for Fabrication and Processing of Nonferrous Metals,General Research......
temperature[4-9]. As the strength of Mg-Gd-Y-Zr alloy is achieved essentially via precipitation strengthening, great efforts have been devoted to analyze the precipitate phases in the matrix. For example, HE... of precipitation-hardening aluminum alloys is essentially dependent on the precipitate phases[13]. But for the precipitation-hardening Mg-Gd-Y-Zr alloy, the relationship between microstructure and fracture......
The growth mechanisms of θ’ precipitate phase in an Al-Cu alloy during aging treatmentLin Gao,Kai Li,Song Ni,Yong Du,Min SongState Key Laboratory of Powder Metallurgy, Central South University摘 要:The plate-shaped θ’(Al2 Cu) precipitate acts as one of the primary strengthening phases in Al-Cu alloys.The interface,especially the semicoherent interface......
directions, which are inferred to be related to θ′-Al2Cu and θ phases. Addition of Cu can accelerate the L12→D023 structural transformation of the Al3Zr precipitate. Acknowledgements The authors would... Trans. Nonferrous Met. Soc. China 22(2012) 1860-1865 Precipitation behaviour of Al3Zr precipitate in Al-Cu-Zr and Al-Cu-Zr-Ti-V alloys JIA Zhi-hong1,2, Jean-Philippe COUZINI?3, Nadia CHERDOUDI3......
to the appearance of θ′ precipitation phases, which increases firstly and then become coarser with the aging time increasing from 10 h to 20 h at 155 ℃. The strength of the alloys reaches the peak, resulting from Ω and θ′ precipitation phases, and decreases due to Ω phases becoming coarser and θ′ precipitation decreasing with the aging time increasing from 10 h to 20 h at 165 ℃. Ω phase becoming......
