TY - GEN
T1 - Effects of fine particle peening on fatigue strength of transformation-induced plasticity (TRIP)-aided martensitic steel
AU - Sugimoto, Koh Ichi
AU - Mizuno, Yuta
AU - Hojo, Tomohiko
N1 - Publisher Copyright:
© (2016) Trans Tech Publications, Switzerland.
PY - 2016
Y1 - 2016
N2 - The effects of fine particle peening on the torsional strength of a transformation-induced plasticity (TRIP)-aided martensitic (TM) steel were investigated for applications to precision gears. Fine particle peening increased the fatigue limits and lowered the notch-sensitivities of steel, compared with quenched and subsequently tempered SNCM420 steel. In addition, fine particle peening lowered the fatigue crack propagation rate in TM steel with a high threshold value of the stress intensity range. These results were associated with (1) higher Vickers hardness, (2) higher compressive residual stress, and (3) a larger amount of untransformed retained austenite in the surface layer when compared with SNCM420 steel.
AB - The effects of fine particle peening on the torsional strength of a transformation-induced plasticity (TRIP)-aided martensitic (TM) steel were investigated for applications to precision gears. Fine particle peening increased the fatigue limits and lowered the notch-sensitivities of steel, compared with quenched and subsequently tempered SNCM420 steel. In addition, fine particle peening lowered the fatigue crack propagation rate in TM steel with a high threshold value of the stress intensity range. These results were associated with (1) higher Vickers hardness, (2) higher compressive residual stress, and (3) a larger amount of untransformed retained austenite in the surface layer when compared with SNCM420 steel.
KW - Fine particle peening
KW - Residual stress
KW - Retained austenite
KW - Strain-induced transformation
KW - Torsional fatigue strength
KW - Transformation-induced plasticity (TRIP)-aided martensitic steel
UR - http://www.scopus.com/inward/record.url?scp=84952801827&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84952801827&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.665.85
DO - 10.4028/www.scientific.net/KEM.665.85
M3 - Conference contribution
AN - SCOPUS:84952801827
SN - 9783038355410
T3 - Key Engineering Materials
SP - 85
EP - 88
BT - Advances in Fracture and Damage Mechanics XIV
A2 - Bajic, Darko
A2 - Tonkovic, Zdenko
A2 - Aliabadi, Ferri
PB - Trans Tech Publications Ltd
T2 - 14th International Conference on Fracture and Damage Mechanics, FDM 2015
Y2 - 21 September 2015 through 23 September 2015
ER -