Strength, Hardness, and Ductility Evidence of Solid Solution Strengthening and Limited Hydrogen Embrittlement in the Alloy System Palladium-Copper (Cu wt. % 5–25)

Strength, hardness, and ductility characteristics were determined for a series of palladium-copper alloys that compositionally vary from 5 to 25 weight percent copper. Alloy specimens subjected to vacuum annealing showed clear evidence of solid solution strengthening. These specimens showed, as a fu...

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Main Authors: Sebastian DiMauro, Gabrielle Legall, Coleman Lubinsky, Monica Nadeau, Renee Tait, William Miller, Abena Adutwum, Isabella Portal, Brandon Roy, Steve Nesbit, Andrew Craft
Format: Article
Language:English
Published: MDPI AG 2021-07-01
Series:Hydrogen
Subjects:
Online Access:https://www.mdpi.com/2673-4141/2/3/14
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spelling doaj-28bb2125a6db4ba6b8c6bd5c308293e52021-09-26T00:16:47ZengMDPI AGHydrogen2673-41412021-07-0121426227210.3390/hydrogen2030014Strength, Hardness, and Ductility Evidence of Solid Solution Strengthening and Limited Hydrogen Embrittlement in the Alloy System Palladium-Copper (Cu wt. % 5–25)Sebastian DiMauro0Gabrielle Legall1Coleman Lubinsky2Monica Nadeau3Renee Tait4William Miller5Abena Adutwum6Isabella Portal7Brandon Roy8Steve Nesbit9Andrew Craft10Department of Chemistry, University of Hartford, West Hartford, CT 06117, USADepartment of Chemistry, University of Hartford, West Hartford, CT 06117, USADepartment of Chemistry, University of Hartford, West Hartford, CT 06117, USADepartment of Chemistry, University of Hartford, West Hartford, CT 06117, USADepartment of Chemistry, University of Hartford, West Hartford, CT 06117, USADepartment of Chemistry, University of Hartford, West Hartford, CT 06117, USADepartment of Chemistry, University of Hartford, West Hartford, CT 06117, USADepartment of Chemistry, University of Hartford, West Hartford, CT 06117, USADepartment of Chemistry, University of Hartford, West Hartford, CT 06117, USADepartment of Mechanical Engineering, Lafayette College, Easton, PA 18042, USADepartment of Chemistry, University of Hartford, West Hartford, CT 06117, USAStrength, hardness, and ductility characteristics were determined for a series of palladium-copper alloys that compositionally vary from 5 to 25 weight percent copper. Alloy specimens subjected to vacuum annealing showed clear evidence of solid solution strengthening. These specimens showed, as a function of increasing copper content, increased yield strength, ultimate strength, and Vickers microhardness, while their ductility was little affected by compositional differences. Annealed alloy specimens subsequently subjected to exposure to hydrogen at 323 K and P<sub>H2</sub> = 1 atm showed evidence of hydrogen embrittlement up to a composition of ~15 wt. % Cu. The magnitude of the hydrogen embrittlement decreased with increasing copper content in the alloy.https://www.mdpi.com/2673-4141/2/3/14palladiumcopperhydrogenstrengthhardnessductility
collection DOAJ
language English
format Article
sources DOAJ
author Sebastian DiMauro
Gabrielle Legall
Coleman Lubinsky
Monica Nadeau
Renee Tait
William Miller
Abena Adutwum
Isabella Portal
Brandon Roy
Steve Nesbit
Andrew Craft
spellingShingle Sebastian DiMauro
Gabrielle Legall
Coleman Lubinsky
Monica Nadeau
Renee Tait
William Miller
Abena Adutwum
Isabella Portal
Brandon Roy
Steve Nesbit
Andrew Craft
Strength, Hardness, and Ductility Evidence of Solid Solution Strengthening and Limited Hydrogen Embrittlement in the Alloy System Palladium-Copper (Cu wt. % 5–25)
Hydrogen
palladium
copper
hydrogen
strength
hardness
ductility
author_facet Sebastian DiMauro
Gabrielle Legall
Coleman Lubinsky
Monica Nadeau
Renee Tait
William Miller
Abena Adutwum
Isabella Portal
Brandon Roy
Steve Nesbit
Andrew Craft
author_sort Sebastian DiMauro
title Strength, Hardness, and Ductility Evidence of Solid Solution Strengthening and Limited Hydrogen Embrittlement in the Alloy System Palladium-Copper (Cu wt. % 5–25)
title_short Strength, Hardness, and Ductility Evidence of Solid Solution Strengthening and Limited Hydrogen Embrittlement in the Alloy System Palladium-Copper (Cu wt. % 5–25)
title_full Strength, Hardness, and Ductility Evidence of Solid Solution Strengthening and Limited Hydrogen Embrittlement in the Alloy System Palladium-Copper (Cu wt. % 5–25)
title_fullStr Strength, Hardness, and Ductility Evidence of Solid Solution Strengthening and Limited Hydrogen Embrittlement in the Alloy System Palladium-Copper (Cu wt. % 5–25)
title_full_unstemmed Strength, Hardness, and Ductility Evidence of Solid Solution Strengthening and Limited Hydrogen Embrittlement in the Alloy System Palladium-Copper (Cu wt. % 5–25)
title_sort strength, hardness, and ductility evidence of solid solution strengthening and limited hydrogen embrittlement in the alloy system palladium-copper (cu wt. % 5–25)
publisher MDPI AG
series Hydrogen
issn 2673-4141
publishDate 2021-07-01
description Strength, hardness, and ductility characteristics were determined for a series of palladium-copper alloys that compositionally vary from 5 to 25 weight percent copper. Alloy specimens subjected to vacuum annealing showed clear evidence of solid solution strengthening. These specimens showed, as a function of increasing copper content, increased yield strength, ultimate strength, and Vickers microhardness, while their ductility was little affected by compositional differences. Annealed alloy specimens subsequently subjected to exposure to hydrogen at 323 K and P<sub>H2</sub> = 1 atm showed evidence of hydrogen embrittlement up to a composition of ~15 wt. % Cu. The magnitude of the hydrogen embrittlement decreased with increasing copper content in the alloy.
topic palladium
copper
hydrogen
strength
hardness
ductility
url https://www.mdpi.com/2673-4141/2/3/14
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