High-temperature compression strengths of precipitation-strengthened ternary Pt-Al-X alloys

P. J. Hill; Y. Yamabe-Mitarai; I. M. Wolff

doi:10.1016/S1359-6462(00)00559-5

High-temperature compression strengths of precipitation-strengthened ternary Pt-Al-X alloys

P. J. Hill, Y. Yamabe-Mitarai, I. M. Wolff

Research output: Contribution to journal › Article › peer-review

34 Citations (Scopus)

Abstract

The effects of various ternary substitutional alloying additions on the high temperature compressive strengths of the Pt-Al-X alloys located in the two-phase (Pt)+Pt3Al region were studied. Ternary alloying additions were selected as solid-solution strengthening elements for the face centered cubic matrix phase (Pt), while other elements were selected to stabilize the high-temperature L1₂ form of the Pt3Al phase. The high temperature cubic allotrope of Pt3Al was stabilized by ternary additions of Ti and Ta, both of which are soluble in Pt3Al. The temperature dependence of the compressive flow stress of ternary Pt-Al-X alloy was measured. The alloys all had higher strengths above 1150 °C and the Pt₈₃Al₁₄Re₃ alloys had the highest strengths above 1200 °C.

Original language	English
Pages (from-to)	43-48
Number of pages	6
Journal	Scripta Materialia
Volume	44
Issue number	1
DOIs	https://doi.org/10.1016/S1359-6462(00)00559-5
Publication status	Published - 2001 Jan 5
Externally published	Yes

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/S1359-6462(00)00559-5

Cite this

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abstract = "The effects of various ternary substitutional alloying additions on the high temperature compressive strengths of the Pt-Al-X alloys located in the two-phase (Pt)+Pt3Al region were studied. Ternary alloying additions were selected as solid-solution strengthening elements for the face centered cubic matrix phase (Pt), while other elements were selected to stabilize the high-temperature L12 form of the Pt3Al phase. The high temperature cubic allotrope of Pt3Al was stabilized by ternary additions of Ti and Ta, both of which are soluble in Pt3Al. The temperature dependence of the compressive flow stress of ternary Pt-Al-X alloy was measured. The alloys all had higher strengths above 1150 °C and the Pt83Al14Re3 alloys had the highest strengths above 1200 °C.",

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AU - Yamabe-Mitarai, Y.

AU - Wolff, I. M.

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N2 - The effects of various ternary substitutional alloying additions on the high temperature compressive strengths of the Pt-Al-X alloys located in the two-phase (Pt)+Pt3Al region were studied. Ternary alloying additions were selected as solid-solution strengthening elements for the face centered cubic matrix phase (Pt), while other elements were selected to stabilize the high-temperature L12 form of the Pt3Al phase. The high temperature cubic allotrope of Pt3Al was stabilized by ternary additions of Ti and Ta, both of which are soluble in Pt3Al. The temperature dependence of the compressive flow stress of ternary Pt-Al-X alloy was measured. The alloys all had higher strengths above 1150 °C and the Pt83Al14Re3 alloys had the highest strengths above 1200 °C.

AB - The effects of various ternary substitutional alloying additions on the high temperature compressive strengths of the Pt-Al-X alloys located in the two-phase (Pt)+Pt3Al region were studied. Ternary alloying additions were selected as solid-solution strengthening elements for the face centered cubic matrix phase (Pt), while other elements were selected to stabilize the high-temperature L12 form of the Pt3Al phase. The high temperature cubic allotrope of Pt3Al was stabilized by ternary additions of Ti and Ta, both of which are soluble in Pt3Al. The temperature dependence of the compressive flow stress of ternary Pt-Al-X alloy was measured. The alloys all had higher strengths above 1150 °C and the Pt83Al14Re3 alloys had the highest strengths above 1200 °C.

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High-temperature compression strengths of precipitation-strengthened ternary Pt-Al-X alloys

Abstract

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