Surface hardening of metals at room temperature by nanoparticle-laden cavitating waterjets

Xingliang He, Miao Song, Yao Du, Yi Shi, Blake A. Johnson, Kornel Ehmann, Yip-Wah Chung*, Q Jane Wang

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Reported in this paper is a novel and facile room-temperature surface-hardening technique, capable of providing five-fold increase in the hardness of an aluminum alloy, by utilizing a cavitating waterjet laden with hard nanoparticles. Microstructural and composition analyses reveal several mechanisms responsible for surface hardening: strain hardening, grain refinement, and dispersion strengthening. The hardened alloy surface also exhibits about 50% reduction in friction in a series of microscale friction measurements. Without the need to treat the alloy at elevated temperatures, this technique obviates such problems as additional energy usage, part distortion, microstructural and composition changes, and thermal shock-induced cracking. Equally important, this new method could be further tailored to impart metals, polymers, composites, etc. with different surface functional properties.

Original languageEnglish (US)
Article number116316
JournalJournal of Materials Processing Technology
Volume275
DOIs
StatePublished - Jan 1 2020

Fingerprint

Hardening
Metals
Nanoparticles
Friction
Temperature
Grain refinement
Strengthening (metal)
Thermal shock
Chemical analysis
Strain hardening
Aluminum alloys
Polymers
Hardness
Composite materials

Keywords

  • Cavitation
  • Low-temperature processing
  • Oxide dispersion strengthening
  • Surface hardening
  • Waterjet

ASJC Scopus subject areas

  • Ceramics and Composites
  • Computer Science Applications
  • Metals and Alloys
  • Industrial and Manufacturing Engineering

Cite this

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title = "Surface hardening of metals at room temperature by nanoparticle-laden cavitating waterjets",
abstract = "Reported in this paper is a novel and facile room-temperature surface-hardening technique, capable of providing five-fold increase in the hardness of an aluminum alloy, by utilizing a cavitating waterjet laden with hard nanoparticles. Microstructural and composition analyses reveal several mechanisms responsible for surface hardening: strain hardening, grain refinement, and dispersion strengthening. The hardened alloy surface also exhibits about 50{\%} reduction in friction in a series of microscale friction measurements. Without the need to treat the alloy at elevated temperatures, this technique obviates such problems as additional energy usage, part distortion, microstructural and composition changes, and thermal shock-induced cracking. Equally important, this new method could be further tailored to impart metals, polymers, composites, etc. with different surface functional properties.",
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author = "Xingliang He and Miao Song and Yao Du and Yi Shi and Johnson, {Blake A.} and Kornel Ehmann and Yip-Wah Chung and Wang, {Q Jane}",
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Surface hardening of metals at room temperature by nanoparticle-laden cavitating waterjets. / He, Xingliang; Song, Miao; Du, Yao; Shi, Yi; Johnson, Blake A.; Ehmann, Kornel; Chung, Yip-Wah; Wang, Q Jane.

In: Journal of Materials Processing Technology, Vol. 275, 116316, 01.01.2020.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Surface hardening of metals at room temperature by nanoparticle-laden cavitating waterjets

AU - He, Xingliang

AU - Song, Miao

AU - Du, Yao

AU - Shi, Yi

AU - Johnson, Blake A.

AU - Ehmann, Kornel

AU - Chung, Yip-Wah

AU - Wang, Q Jane

PY - 2020/1/1

Y1 - 2020/1/1

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AB - Reported in this paper is a novel and facile room-temperature surface-hardening technique, capable of providing five-fold increase in the hardness of an aluminum alloy, by utilizing a cavitating waterjet laden with hard nanoparticles. Microstructural and composition analyses reveal several mechanisms responsible for surface hardening: strain hardening, grain refinement, and dispersion strengthening. The hardened alloy surface also exhibits about 50% reduction in friction in a series of microscale friction measurements. Without the need to treat the alloy at elevated temperatures, this technique obviates such problems as additional energy usage, part distortion, microstructural and composition changes, and thermal shock-induced cracking. Equally important, this new method could be further tailored to impart metals, polymers, composites, etc. with different surface functional properties.

KW - Cavitation

KW - Low-temperature processing

KW - Oxide dispersion strengthening

KW - Surface hardening

KW - Waterjet

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