Relationship between compressive residual stress relaxation and microhardness reduction after cyclic loads on shotpeened ASTM A516 grade 70 steel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Shot peening process is a cold performed function to enhance the mechanical properties which is widely used in many industries. This process introduces compressive residual stress which was proven to increase the fatigue life, geometry stability and corrosion resistance. However, the benefit of the residual stress is still unstable due to the relaxation during the operation. This paper will study on the trend of the relaxation of residual stress against cyclic loading as well as the change in the hardness. The material used in this study is carbon steel ASTM A516/ SA 516 Grade 70. Shot peening process with steel shots was applied to the samples to introduce compressive residual stress in the samples. Cyclic load was applied to samples after shot peening process with low load of 52Mpa (20% of Yield Strength) and high load of 208Mpa (80% of Yield Strength). The measurement of residual stress using X-Ray diffraction and hardness test was done on the samples to study the trend of the relaxation of residual stress and the change in hardness values. The result shows that more relaxation of residual stress occurs if the applied cyclic load is higher. The change of hardness trend is found non-sequenced in this study due to random coverage of shot peening.

Original languageEnglish
Title of host publicationAdvanced Materials Research VII
PublisherTrans Tech Publications Ltd
Pages232-236
Number of pages5
ISBN (Print)9783035712308
DOIs
Publication statusPublished - 01 Jan 2018
Event8th International Conference on Advanced Materials Research, ICAMR 2018 - Fukuoka, Japan
Duration: 20 Jan 201822 Jan 2018

Publication series

NameKey Engineering Materials
Volume765 KEM
ISSN (Print)1013-9826

Other

Other8th International Conference on Advanced Materials Research, ICAMR 2018
CountryJapan
CityFukuoka
Period20/01/1822/01/18

Fingerprint

Cyclic loads
Steel
Stress relaxation
Compressive stress
Microhardness
Residual stresses
Shot peening
Hardness
Yield stress
Loads (forces)
Carbon steel
Corrosion resistance
Fatigue of materials
X ray diffraction
Mechanical properties
Geometry
Industry

All Science Journal Classification (ASJC) codes

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

Cite this

Isa, Mohd Rashdan ; Zaroog, Omar Suliman ; Ali, Fareg S. / Relationship between compressive residual stress relaxation and microhardness reduction after cyclic loads on shotpeened ASTM A516 grade 70 steel. Advanced Materials Research VII. Trans Tech Publications Ltd, 2018. pp. 232-236 (Key Engineering Materials).
@inproceedings{a63ca42e4971426abe7a2c16a3307dae,
title = "Relationship between compressive residual stress relaxation and microhardness reduction after cyclic loads on shotpeened ASTM A516 grade 70 steel",
abstract = "Shot peening process is a cold performed function to enhance the mechanical properties which is widely used in many industries. This process introduces compressive residual stress which was proven to increase the fatigue life, geometry stability and corrosion resistance. However, the benefit of the residual stress is still unstable due to the relaxation during the operation. This paper will study on the trend of the relaxation of residual stress against cyclic loading as well as the change in the hardness. The material used in this study is carbon steel ASTM A516/ SA 516 Grade 70. Shot peening process with steel shots was applied to the samples to introduce compressive residual stress in the samples. Cyclic load was applied to samples after shot peening process with low load of 52Mpa (20{\%} of Yield Strength) and high load of 208Mpa (80{\%} of Yield Strength). The measurement of residual stress using X-Ray diffraction and hardness test was done on the samples to study the trend of the relaxation of residual stress and the change in hardness values. The result shows that more relaxation of residual stress occurs if the applied cyclic load is higher. The change of hardness trend is found non-sequenced in this study due to random coverage of shot peening.",
author = "Isa, {Mohd Rashdan} and Zaroog, {Omar Suliman} and Ali, {Fareg S.}",
year = "2018",
month = "1",
day = "1",
doi = "10.4028/www.scientific.net/KEM.765.232",
language = "English",
isbn = "9783035712308",
series = "Key Engineering Materials",
publisher = "Trans Tech Publications Ltd",
pages = "232--236",
booktitle = "Advanced Materials Research VII",

}

Isa, MR, Zaroog, OS & Ali, FS 2018, Relationship between compressive residual stress relaxation and microhardness reduction after cyclic loads on shotpeened ASTM A516 grade 70 steel. in Advanced Materials Research VII. Key Engineering Materials, vol. 765 KEM, Trans Tech Publications Ltd, pp. 232-236, 8th International Conference on Advanced Materials Research, ICAMR 2018, Fukuoka, Japan, 20/01/18. https://doi.org/10.4028/www.scientific.net/KEM.765.232

Relationship between compressive residual stress relaxation and microhardness reduction after cyclic loads on shotpeened ASTM A516 grade 70 steel. / Isa, Mohd Rashdan; Zaroog, Omar Suliman; Ali, Fareg S.

Advanced Materials Research VII. Trans Tech Publications Ltd, 2018. p. 232-236 (Key Engineering Materials; Vol. 765 KEM).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Relationship between compressive residual stress relaxation and microhardness reduction after cyclic loads on shotpeened ASTM A516 grade 70 steel

AU - Isa, Mohd Rashdan

AU - Zaroog, Omar Suliman

AU - Ali, Fareg S.

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Shot peening process is a cold performed function to enhance the mechanical properties which is widely used in many industries. This process introduces compressive residual stress which was proven to increase the fatigue life, geometry stability and corrosion resistance. However, the benefit of the residual stress is still unstable due to the relaxation during the operation. This paper will study on the trend of the relaxation of residual stress against cyclic loading as well as the change in the hardness. The material used in this study is carbon steel ASTM A516/ SA 516 Grade 70. Shot peening process with steel shots was applied to the samples to introduce compressive residual stress in the samples. Cyclic load was applied to samples after shot peening process with low load of 52Mpa (20% of Yield Strength) and high load of 208Mpa (80% of Yield Strength). The measurement of residual stress using X-Ray diffraction and hardness test was done on the samples to study the trend of the relaxation of residual stress and the change in hardness values. The result shows that more relaxation of residual stress occurs if the applied cyclic load is higher. The change of hardness trend is found non-sequenced in this study due to random coverage of shot peening.

AB - Shot peening process is a cold performed function to enhance the mechanical properties which is widely used in many industries. This process introduces compressive residual stress which was proven to increase the fatigue life, geometry stability and corrosion resistance. However, the benefit of the residual stress is still unstable due to the relaxation during the operation. This paper will study on the trend of the relaxation of residual stress against cyclic loading as well as the change in the hardness. The material used in this study is carbon steel ASTM A516/ SA 516 Grade 70. Shot peening process with steel shots was applied to the samples to introduce compressive residual stress in the samples. Cyclic load was applied to samples after shot peening process with low load of 52Mpa (20% of Yield Strength) and high load of 208Mpa (80% of Yield Strength). The measurement of residual stress using X-Ray diffraction and hardness test was done on the samples to study the trend of the relaxation of residual stress and the change in hardness values. The result shows that more relaxation of residual stress occurs if the applied cyclic load is higher. The change of hardness trend is found non-sequenced in this study due to random coverage of shot peening.

UR - http://www.scopus.com/inward/record.url?scp=85045062971&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85045062971&partnerID=8YFLogxK

U2 - 10.4028/www.scientific.net/KEM.765.232

DO - 10.4028/www.scientific.net/KEM.765.232

M3 - Conference contribution

SN - 9783035712308

T3 - Key Engineering Materials

SP - 232

EP - 236

BT - Advanced Materials Research VII

PB - Trans Tech Publications Ltd

ER -