Fatigue properties of Ni-base superalloy in long life region at elevated temperature

Norio Kawagoishi, Qiang Chen, Ken Ichi Otsubo, Nu Yan, Eiji Kondo, Qingyuan Wang

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The fatigue properties of a nickel-base superalloy, Inconel 718, in long-life region up to 108 cycles were investigated under rotating bending at room temperature and elevated temperature of 300°C, 500°C and 600°C. S-N curves at 500°C and 600°C showed the stepwise shapes, though those in cases of room temperature and 300°C were the conventional one-step ones. All the fractures originated from the specimen surface at room temperature and 300°C, while the internal fractures occurred in long-life region beyond 107 cycles and the surface fractures at the stress levels over the horizontal line of S-N curves corresponding to the fatigue limit for the surface fracture at 500°C and 600°C. Intergranular cracking were observed at the origin of internal fracture.

Original languageEnglish
Pages (from-to)1192-1197
Number of pages6
JournalNippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume68
Issue number8
Publication statusPublished - Aug 1 2002

Fingerprint

Superalloys
Fatigue of materials
Temperature
Nickel

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Fatigue properties of Ni-base superalloy in long life region at elevated temperature. / Kawagoishi, Norio; Chen, Qiang; Otsubo, Ken Ichi; Yan, Nu; Kondo, Eiji; Wang, Qingyuan.

In: Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, Vol. 68, No. 8, 01.08.2002, p. 1192-1197.

Research output: Contribution to journalArticle

@article{653f358822dd4c1a8047096ca70f0a39,
title = "Fatigue properties of Ni-base superalloy in long life region at elevated temperature",
abstract = "The fatigue properties of a nickel-base superalloy, Inconel 718, in long-life region up to 108 cycles were investigated under rotating bending at room temperature and elevated temperature of 300°C, 500°C and 600°C. S-N curves at 500°C and 600°C showed the stepwise shapes, though those in cases of room temperature and 300°C were the conventional one-step ones. All the fractures originated from the specimen surface at room temperature and 300°C, while the internal fractures occurred in long-life region beyond 107 cycles and the surface fractures at the stress levels over the horizontal line of S-N curves corresponding to the fatigue limit for the surface fracture at 500°C and 600°C. Intergranular cracking were observed at the origin of internal fracture.",
author = "Norio Kawagoishi and Qiang Chen and Otsubo, {Ken Ichi} and Nu Yan and Eiji Kondo and Qingyuan Wang",
year = "2002",
month = "8",
day = "1",
language = "English",
volume = "68",
pages = "1192--1197",
journal = "Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A",
issn = "0387-5008",
publisher = "一般社団法人日本機械学会",
number = "8",

}

TY - JOUR

T1 - Fatigue properties of Ni-base superalloy in long life region at elevated temperature

AU - Kawagoishi, Norio

AU - Chen, Qiang

AU - Otsubo, Ken Ichi

AU - Yan, Nu

AU - Kondo, Eiji

AU - Wang, Qingyuan

PY - 2002/8/1

Y1 - 2002/8/1

N2 - The fatigue properties of a nickel-base superalloy, Inconel 718, in long-life region up to 108 cycles were investigated under rotating bending at room temperature and elevated temperature of 300°C, 500°C and 600°C. S-N curves at 500°C and 600°C showed the stepwise shapes, though those in cases of room temperature and 300°C were the conventional one-step ones. All the fractures originated from the specimen surface at room temperature and 300°C, while the internal fractures occurred in long-life region beyond 107 cycles and the surface fractures at the stress levels over the horizontal line of S-N curves corresponding to the fatigue limit for the surface fracture at 500°C and 600°C. Intergranular cracking were observed at the origin of internal fracture.

AB - The fatigue properties of a nickel-base superalloy, Inconel 718, in long-life region up to 108 cycles were investigated under rotating bending at room temperature and elevated temperature of 300°C, 500°C and 600°C. S-N curves at 500°C and 600°C showed the stepwise shapes, though those in cases of room temperature and 300°C were the conventional one-step ones. All the fractures originated from the specimen surface at room temperature and 300°C, while the internal fractures occurred in long-life region beyond 107 cycles and the surface fractures at the stress levels over the horizontal line of S-N curves corresponding to the fatigue limit for the surface fracture at 500°C and 600°C. Intergranular cracking were observed at the origin of internal fracture.

UR - http://www.scopus.com/inward/record.url?scp=0036702454&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036702454&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0036702454

VL - 68

SP - 1192

EP - 1197

JO - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A

JF - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A

SN - 0387-5008

IS - 8

ER -