Impact wear characteristics of engine valve and valve seat insert materials at high temperature (impact wear tests of austenitic heat-resistant steel SUH36 against Fe-base sintered alloy using plane specimens)

T. Ootani, N. Yahata, A. Fujiki, A. Ehira

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

In order to simulate the wear of the valves and valve seat inserts of automotive engines, impact wear tests were conducted using rings made of a JIS SUH36 steel valve material and disks made of a sintered alloy valve seat insert material. Test conditions were as follows: impact energy of 0.588 J, dry air of room temperature, 200°C and 400°C, and sliding speeds of 0-0.8 m s-1. Under these conditions, very low wear was observed for both materials subjected to impacts without sliding. Under impacts with sliding at 0.1 m s-1, a mildly bright worn surface was observed at room temperature. At this sliding speed, the rings also showed an accelerated wear rate. At 200°C with sliding speeds over 0.4 m s-1, a bright worn surface was observed and the wear rate was severe. However, at 400°C, oxidation occurred and no acceleration of the wear rate was observed at any sliding speed. These results can be explained by the occurrence of oxidation and the mechanical properties of the test materials.

Original languageEnglish
Pages (from-to)175-184
Number of pages10
JournalWear
Volume188
Issue number1-2
DOIs
Publication statusPublished - 1995
Externally publishedYes

Fingerprint

Die casting inserts
wear tests
Steel
inserts
seats
sliding
engines
Wear of materials
steels
Engines
heat
Temperature
materials tests
Oxidation
oxidation
rings
room temperature
Hot Temperature
mechanical properties
occurrences

Keywords

  • Engine valve
  • High temperature
  • Impact wear
  • Oxidation
  • Wear rate

ASJC Scopus subject areas

  • Mechanics of Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Engineering(all)
  • Mechanical Engineering

Cite this

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title = "Impact wear characteristics of engine valve and valve seat insert materials at high temperature (impact wear tests of austenitic heat-resistant steel SUH36 against Fe-base sintered alloy using plane specimens)",
abstract = "In order to simulate the wear of the valves and valve seat inserts of automotive engines, impact wear tests were conducted using rings made of a JIS SUH36 steel valve material and disks made of a sintered alloy valve seat insert material. Test conditions were as follows: impact energy of 0.588 J, dry air of room temperature, 200°C and 400°C, and sliding speeds of 0-0.8 m s-1. Under these conditions, very low wear was observed for both materials subjected to impacts without sliding. Under impacts with sliding at 0.1 m s-1, a mildly bright worn surface was observed at room temperature. At this sliding speed, the rings also showed an accelerated wear rate. At 200°C with sliding speeds over 0.4 m s-1, a bright worn surface was observed and the wear rate was severe. However, at 400°C, oxidation occurred and no acceleration of the wear rate was observed at any sliding speed. These results can be explained by the occurrence of oxidation and the mechanical properties of the test materials.",
keywords = "Engine valve, High temperature, Impact wear, Oxidation, Wear rate",
author = "T. Ootani and N. Yahata and A. Fujiki and A. Ehira",
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T1 - Impact wear characteristics of engine valve and valve seat insert materials at high temperature (impact wear tests of austenitic heat-resistant steel SUH36 against Fe-base sintered alloy using plane specimens)

AU - Ootani, T.

AU - Yahata, N.

AU - Fujiki, A.

AU - Ehira, A.

PY - 1995

Y1 - 1995

N2 - In order to simulate the wear of the valves and valve seat inserts of automotive engines, impact wear tests were conducted using rings made of a JIS SUH36 steel valve material and disks made of a sintered alloy valve seat insert material. Test conditions were as follows: impact energy of 0.588 J, dry air of room temperature, 200°C and 400°C, and sliding speeds of 0-0.8 m s-1. Under these conditions, very low wear was observed for both materials subjected to impacts without sliding. Under impacts with sliding at 0.1 m s-1, a mildly bright worn surface was observed at room temperature. At this sliding speed, the rings also showed an accelerated wear rate. At 200°C with sliding speeds over 0.4 m s-1, a bright worn surface was observed and the wear rate was severe. However, at 400°C, oxidation occurred and no acceleration of the wear rate was observed at any sliding speed. These results can be explained by the occurrence of oxidation and the mechanical properties of the test materials.

AB - In order to simulate the wear of the valves and valve seat inserts of automotive engines, impact wear tests were conducted using rings made of a JIS SUH36 steel valve material and disks made of a sintered alloy valve seat insert material. Test conditions were as follows: impact energy of 0.588 J, dry air of room temperature, 200°C and 400°C, and sliding speeds of 0-0.8 m s-1. Under these conditions, very low wear was observed for both materials subjected to impacts without sliding. Under impacts with sliding at 0.1 m s-1, a mildly bright worn surface was observed at room temperature. At this sliding speed, the rings also showed an accelerated wear rate. At 200°C with sliding speeds over 0.4 m s-1, a bright worn surface was observed and the wear rate was severe. However, at 400°C, oxidation occurred and no acceleration of the wear rate was observed at any sliding speed. These results can be explained by the occurrence of oxidation and the mechanical properties of the test materials.

KW - Engine valve

KW - High temperature

KW - Impact wear

KW - Oxidation

KW - Wear rate

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