Microstructural and mechanical characteristics of Cu-Cu2O composites compacted with pulsed electric current sintering and hot isostatic pressing

R. Ritasalo (Corresponding Author), M.E. Cura, X.W. Liu, Y. Ge, Topi Kosonen, Ulla Kanerva, O. Söderberg, S.-P. Hannula

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

This paper reports the influence of applied sintering process – pulsed electric current sintering (PECS) and hot isostatic pressing (HIP) – on the microstructure and mechanical properties of Cu–Cu2O composites. In PECS fine-grained structure was obtained while in HIPing the grain growth was more noticeable, mostly due to the longer process time. The studies also showed that Cu2O-phase distributed in Cu-matrix increased microhardness; at a fixed grains size Cu–Cu2O structure had higher hardness than Cu so that 20% higher microhardness was obtained when Cu2O was doubled from 19.1 to 37.2 vol%. At best, 99.1% density with 690 nm grain size and 1.35 GPa hardness were achieved by PECS whereas by HIP the same density with 1860 nm grain size gave 1.02 GPa hardness. The grain growth and the effect of second phase clustering on the grain growth were evaluated experimentally.
Original languageEnglish
Pages (from-to)61-69
JournalComposites Part A: Applied Science and Manufacturing
Volume45
DOIs
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

Fingerprint

Spark plasma sintering
Hot isostatic pressing
Grain growth
Hardness
Microhardness
Composite materials
Sintering
Mechanical properties
Microstructure

Keywords

  • Metal-matrix composites (MMCs)
  • particle-reinforcement
  • mechanical properties
  • microstructure

Cite this

Ritasalo, R. ; Cura, M.E. ; Liu, X.W. ; Ge, Y. ; Kosonen, Topi ; Kanerva, Ulla ; Söderberg, O. ; Hannula, S.-P. / Microstructural and mechanical characteristics of Cu-Cu2O composites compacted with pulsed electric current sintering and hot isostatic pressing. In: Composites Part A: Applied Science and Manufacturing. 2013 ; Vol. 45. pp. 61-69.
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title = "Microstructural and mechanical characteristics of Cu-Cu2O composites compacted with pulsed electric current sintering and hot isostatic pressing",
abstract = "This paper reports the influence of applied sintering process – pulsed electric current sintering (PECS) and hot isostatic pressing (HIP) – on the microstructure and mechanical properties of Cu–Cu2O composites. In PECS fine-grained structure was obtained while in HIPing the grain growth was more noticeable, mostly due to the longer process time. The studies also showed that Cu2O-phase distributed in Cu-matrix increased microhardness; at a fixed grains size Cu–Cu2O structure had higher hardness than Cu so that 20{\%} higher microhardness was obtained when Cu2O was doubled from 19.1 to 37.2 vol{\%}. At best, 99.1{\%} density with 690 nm grain size and 1.35 GPa hardness were achieved by PECS whereas by HIP the same density with 1860 nm grain size gave 1.02 GPa hardness. The grain growth and the effect of second phase clustering on the grain growth were evaluated experimentally.",
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Microstructural and mechanical characteristics of Cu-Cu2O composites compacted with pulsed electric current sintering and hot isostatic pressing. / Ritasalo, R. (Corresponding Author); Cura, M.E.; Liu, X.W.; Ge, Y.; Kosonen, Topi; Kanerva, Ulla; Söderberg, O.; Hannula, S.-P.

In: Composites Part A: Applied Science and Manufacturing, Vol. 45, 2013, p. 61-69.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Microstructural and mechanical characteristics of Cu-Cu2O composites compacted with pulsed electric current sintering and hot isostatic pressing

AU - Ritasalo, R.

AU - Cura, M.E.

AU - Liu, X.W.

AU - Ge, Y.

AU - Kosonen, Topi

AU - Kanerva, Ulla

AU - Söderberg, O.

AU - Hannula, S.-P.

PY - 2013

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N2 - This paper reports the influence of applied sintering process – pulsed electric current sintering (PECS) and hot isostatic pressing (HIP) – on the microstructure and mechanical properties of Cu–Cu2O composites. In PECS fine-grained structure was obtained while in HIPing the grain growth was more noticeable, mostly due to the longer process time. The studies also showed that Cu2O-phase distributed in Cu-matrix increased microhardness; at a fixed grains size Cu–Cu2O structure had higher hardness than Cu so that 20% higher microhardness was obtained when Cu2O was doubled from 19.1 to 37.2 vol%. At best, 99.1% density with 690 nm grain size and 1.35 GPa hardness were achieved by PECS whereas by HIP the same density with 1860 nm grain size gave 1.02 GPa hardness. The grain growth and the effect of second phase clustering on the grain growth were evaluated experimentally.

AB - This paper reports the influence of applied sintering process – pulsed electric current sintering (PECS) and hot isostatic pressing (HIP) – on the microstructure and mechanical properties of Cu–Cu2O composites. In PECS fine-grained structure was obtained while in HIPing the grain growth was more noticeable, mostly due to the longer process time. The studies also showed that Cu2O-phase distributed in Cu-matrix increased microhardness; at a fixed grains size Cu–Cu2O structure had higher hardness than Cu so that 20% higher microhardness was obtained when Cu2O was doubled from 19.1 to 37.2 vol%. At best, 99.1% density with 690 nm grain size and 1.35 GPa hardness were achieved by PECS whereas by HIP the same density with 1860 nm grain size gave 1.02 GPa hardness. The grain growth and the effect of second phase clustering on the grain growth were evaluated experimentally.

KW - Metal-matrix composites (MMCs)

KW - particle-reinforcement

KW - mechanical properties

KW - microstructure

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DO - 10.1016/j.compositesa.2012.09.003

M3 - Article

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JO - Composites Part A: Applied Science and Manufacturing

JF - Composites Part A: Applied Science and Manufacturing

SN - 1359-835X

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