Effect of grain size on α-variant selection in a ZrTiAlV alloy

Li, FeiTao; Qiu, Xi; Liao, Zhongni; Luan, Baifeng; Zhang, Xinyu; Liu, Riping; Qing, Liu

doi:10.1007/s11431-018-9479-y

Cited by 6 publications

(2 citation statements)

References 29 publications

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“…[ 29 ] Furthermore, it is well known that there was a phase transition of Zr from α‐Zr (HCP) to β ‐Zr (BCC) at 863 °C, which leads to softening of Zr alloys at high temperatures. [ 30 ] During the diffusion bonding experiment, the Zr‐4 substrate deformed significantly when the temperature reached 900 °C. Therefore, it is crucial to achieve diffusion bonding of Zr alloys with high properties at relatively low temperatures by the addition of interlayer.…”

Section: Resultsmentioning

confidence: 99%

Microstructure and Mechanical Properties of Zr‐4 Alloy and 316 Stainless Steel Diffusion Bonding Joint Using Nb/Ni Composite Interlayer

et al. 2023

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Diffusion bonding of Zr‐4 alloy and 316 stainless steel (SS) without and with the Nb/Ni composite interlayer has been performed. The maximum shear strength of the joint without interlayer is 131 MPa at 900 °C for 30 min under 10 MPa. The results show that the fracture occurs at the diffusion layer as a result of the limited mutual solubility between Zr and Fe and detrimental residual stress. Sound diffusion bonding joints without defects are obtained at lower bonding temperatures due to the addition of Nb/Ni interlayer, and the maximum shear strength is 380 MPa at 820 °C. The typical microstructure of the Zr‐4/Nb/Ni/316SS joint is Zr‐4/Zr(Nb)/Zr(Fe, Nb)2 /Zr(Nb)/Nb/Ni3Nb/Ni/(Fe, Cr, Ni)/316SS. The highest hardness value of the joint is 422 HV at the Ni3Nb phase, and cracks appear at the interface between Ni3Nb and the remaining Ni foil. The shear strength first increases and then drops as the Ni3Nb layer thickened. The peak residual stress of the joint reduces from 698 to 466 MPa due to the addition of the Nb/Ni composite interlayer. Finally, the growth kinetic model of the Ni3Nb layer is calculated, which provides a pathway for the regulation of joint properties.

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Section: Resultsmentioning

confidence: 99%

Microstructure and Mechanical Properties of Zr‐4 Alloy and 316 Stainless Steel Diffusion Bonding Joint Using Nb/Ni Composite Interlayer

et al. 2023

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“…The ZrTiAlV alloy is a new zirconium alloy system that can reach a high strength of ~1500 MPa via a certain treatment process [9,10]. The mechanical properties and the microstructural evolution during room-temperature deformation and following the subsequent conventional heat treatment process have been studied [11].…”

Section: Introductionmentioning

confidence: 99%

Effect of Electropulsing Treatment on Microstructure and Mechanical Properties of a Deformed ZrTiAlV Alloy

et al. 2019

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In contrast to conventional heat treatment processes, electropulsing not only heats an alloy, but also exerts some other positive effects during the heating process. In this paper, the microstructural evolution and mechanical properties of a deformed Zr40Ti5Al4V alloy after electropulsing treatment were investigated. The results showed that when the charging voltage was 2 kV, there was a slight decrease in dislocation density due to the electron wind which softened the alloy even though the highest temperature of the specimen during the treatment was only 86 °C. Increasing the charging voltage to 6 kV not only further increased the heating temperature, but accelerated the phase transformation process of α″ → β → α. The presence of the α phase strengthened the alloy but notably deteriorated its ductility. A full and refined β phase microstructure could be obtained when the charging voltage was increased to 8 kV. This simultaneously increased the strength and ductility of the alloy.

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Effect of Electric Field-Assisted Heat Treatment on Microstructure and Phase Transformation of Zrtialv Alloy

et al. 2023

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Effect of grain size on α-variant selection in a ZrTiAlV alloy

Cited by 6 publications

References 29 publications

Microstructure and Mechanical Properties of Zr‐4 Alloy and 316 Stainless Steel Diffusion Bonding Joint Using Nb/Ni Composite Interlayer

Microstructure and Mechanical Properties of Zr‐4 Alloy and 316 Stainless Steel Diffusion Bonding Joint Using Nb/Ni Composite Interlayer

Effect of Electropulsing Treatment on Microstructure and Mechanical Properties of a Deformed ZrTiAlV Alloy

Effect of Electric Field-Assisted Heat Treatment on Microstructure and Phase Transformation of Zrtialv Alloy

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