Microstructure and tensile properties of Mo alloy synthetically strengthened by nano-Y2O3 and nano-CeO2

Ren-zhi, Liu; Wang, Kuaishe; Feng, Pingfa; An, Gaili; Yang, Qin-Li; Zhao, Hongyi

doi:10.1007/s12598-013-0120-3

Cited by 12 publications

(1 citation statement)

References 3 publications

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“…When Y 2 O 3 particles are located at the interface, Mo can diffuse into Y 2 O 3 to some extent, indicating that the Mo atoms can coexist well with the Y 2 O 3 particles. We note that recent studies showed that the incorporation of rare earth oxides can remarkably enhance the physical and mechanical properties of Mo alloys [29,30].…”

Section: Microstructure Analysismentioning

confidence: 74%

Study on Microstructure, Mechanical Performance and Thermal Shock Resistance of Diffusion Welded Joint of ODS-W and TZC Alloy

Liu,

Zhou,

et al. 2023

Metals

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The diffusion welded joint of oxide dispersion strengthened tungsten (ODS-W) and Mo-Ti-Zr-C alloy (TZC) was successfully fabricated with the use of spark plasma sintering (SPS) at a vacuum level of 10 Pa. This study systematically investigates the microstructure, mechanical performance, and thermal shock resistance of the ODS-W/TZC connector at four different temperatures, ranging from 1300 to 1600 °C. The diffusion distance between the W and Mo atoms at the interface of ODS-W/TZC joint raises as the sintering temperature increases, with a maximum diffusion distance of up to 2 μm at 1500 °C, but then slightly decreases at 1600 °C. The ODS-W/TZC connector bonded at 1500 °C exhibits the best tensile performance, with tensile strengths of 459 MPa and 786 MPa at room temperature and 500 °C, respectively. A maximum hardness of 446 HV is obtained at the interface when the sample is sintered at 1600 °C. Thermal shock tests are conducted on the surface and interface of the ODS-W/TZC connector sintered at various temperatures. ODS-W/TZC samples prepared below 1500 °C were severely damaged, leading to exfoliation after laser thermal shock, while samples prepared above 1500 °C produced fewer damage cracks. Confocal laser scanning microscope (CLSM) analysis demonstrated that the ODS-W/TZC joint fabricated at 1500 °C exhibited substantially reduced height perturbation of both its surface and interface compared to that of ODS-W, providing evidence for its superior thermal shock resistance.

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Section: Microstructure Analysismentioning

confidence: 74%

Study on Microstructure, Mechanical Performance and Thermal Shock Resistance of Diffusion Welded Joint of ODS-W and TZC Alloy

Liu,

Zhou,

et al. 2023

Metals

View full text Add to dashboard Cite

show abstract

Synthesis of CeO2 nanoparticles using flame-assisted spray pyrolysis and solid state diffusion routes

Nemade

2014

Rare Met.

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Microstructure and mechanical properties of Ti44Al6Nb alloys with different cerium contents

Fang

Chen

et al. 2015

Rare Met.

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Microstructure and tensile properties of Mo alloy synthetically strengthened by nano-Y2O3 and nano-CeO2

Cited by 12 publications

References 3 publications

Study on Microstructure, Mechanical Performance and Thermal Shock Resistance of Diffusion Welded Joint of ODS-W and TZC Alloy

Study on Microstructure, Mechanical Performance and Thermal Shock Resistance of Diffusion Welded Joint of ODS-W and TZC Alloy

Synthesis of CeO2 nanoparticles using flame-assisted spray pyrolysis and solid state diffusion routes

Microstructure and mechanical properties of Ti44Al6Nb alloys with different cerium contents

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