Microstructure and strength of weldment in Pt20Rh alloys dispersion-strengthened by ZrO2 particles: Paper

Faping Hu; Ziyang Wang; Tianbo Yu; Zonglun Yang; Guobing Wei; Xuan Luo; Niels Hansen; Xiaoxu Huang; Weidong Xie

doi:10.1088/1757-899x/580/1/012035

Microstructure and strength of weldment in Pt20Rh alloys dispersion-strengthened by ZrO₂ particles: Paper

Faping Hu, Ziyang Wang, Tianbo Yu, Zonglun Yang, Guobing Wei, Xuan Luo, Niels Hansen, Xiaoxu Huang, Weidong Xie^*

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › Research › peer-review

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Abstract

A series of Pt20Rh alloys dispersion-strengthened by different volume fractions of ZrO₂ particles have been prepared by internal oxidation of Pt20Rh powder followed by consolidation and hot forging. The alloys were cold rolled to sheets, followed by annealing. The effects of welding on the microstructure and mechanical properties were also investigated. The microstructure of the rolled sheets showed a lamellar structure and the yield stress was significantly increased with increasing volume fraction of dispersion particles. After welding, the yield stress at room temperature was almost unchanged, although a small decrease was observed at 1000 °C. However, the work hardening capacity and ultimate tensile stress were significantly reduced in the welded sample due to grain coarsening and to increased pore density in the fusion zone.

Original language	English
Article number	012035
Journal	I O P Conference Series: Materials Science and Engineering
Volume	580
Issue number	1
Number of pages	6
ISSN	1757-8981
DOIs	https://doi.org/10.1088/1757-899x/580/1/012035
Publication status	Published - 2019
Event	40th Risø International Symposium on Material Science: Metal Microstructures in 2D, 3D, and 4D - Roskilde, Denmark Duration: 2 Sept 2019 → 6 Sept 2019

Conference

Conference	40th Risø International Symposium on Material Science: Metal Microstructures in 2D, 3D, and 4D
Country/Territory	Denmark
City	Roskilde
Period	02/09/2019 → 06/09/2019

Bibliographical note

GA no. 788567

Access to Document

10.1088/1757-899x/580/1/012035Licence: CC BY

FulltextFinal published version, 467 KBLicence: CC BY

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M4D: Metal Microstructures in Four Dimensions
Juul Jensen, D. (PI) & Hede, L. G. (Other)
01/10/2018 → 30/09/2023
Project: Research

Cite this

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title = "Microstructure and strength of weldment in Pt20Rh alloys dispersion-strengthened by ZrO2 particles: Paper",

abstract = "A series of Pt20Rh alloys dispersion-strengthened by different volume fractions of ZrO2 particles have been prepared by internal oxidation of Pt20Rh powder followed by consolidation and hot forging. The alloys were cold rolled to sheets, followed by annealing. The effects of welding on the microstructure and mechanical properties were also investigated. The microstructure of the rolled sheets showed a lamellar structure and the yield stress was significantly increased with increasing volume fraction of dispersion particles. After welding, the yield stress at room temperature was almost unchanged, although a small decrease was observed at 1000 °C. However, the work hardening capacity and ultimate tensile stress were significantly reduced in the welded sample due to grain coarsening and to increased pore density in the fusion zone.",

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T1 - Microstructure and strength of weldment in Pt20Rh alloys dispersion-strengthened by ZrO2 particles

T2 - 40th Risø International Symposium on Material Science: Metal Microstructures in 2D, 3D, and 4D

AU - Hu, Faping

AU - Wang, Ziyang

AU - Yu, Tianbo

AU - Yang, Zonglun

AU - Wei, Guobing

AU - Luo, Xuan

AU - Hansen, Niels

AU - Huang, Xiaoxu

AU - Xie, Weidong

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N2 - A series of Pt20Rh alloys dispersion-strengthened by different volume fractions of ZrO2 particles have been prepared by internal oxidation of Pt20Rh powder followed by consolidation and hot forging. The alloys were cold rolled to sheets, followed by annealing. The effects of welding on the microstructure and mechanical properties were also investigated. The microstructure of the rolled sheets showed a lamellar structure and the yield stress was significantly increased with increasing volume fraction of dispersion particles. After welding, the yield stress at room temperature was almost unchanged, although a small decrease was observed at 1000 °C. However, the work hardening capacity and ultimate tensile stress were significantly reduced in the welded sample due to grain coarsening and to increased pore density in the fusion zone.

AB - A series of Pt20Rh alloys dispersion-strengthened by different volume fractions of ZrO2 particles have been prepared by internal oxidation of Pt20Rh powder followed by consolidation and hot forging. The alloys were cold rolled to sheets, followed by annealing. The effects of welding on the microstructure and mechanical properties were also investigated. The microstructure of the rolled sheets showed a lamellar structure and the yield stress was significantly increased with increasing volume fraction of dispersion particles. After welding, the yield stress at room temperature was almost unchanged, although a small decrease was observed at 1000 °C. However, the work hardening capacity and ultimate tensile stress were significantly reduced in the welded sample due to grain coarsening and to increased pore density in the fusion zone.

U2 - 10.1088/1757-899x/580/1/012035

DO - 10.1088/1757-899x/580/1/012035

M3 - Conference article

SN - 1757-8981

VL - 580

JO - I O P Conference Series: Materials Science and Engineering

JF - I O P Conference Series: Materials Science and Engineering

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Y2 - 2 September 2019 through 6 September 2019

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