Browse Publications Technical Papers 2003-01-2880
2003-10-27

Effect of microstructure on fatigue properties of hot-rolled sheet steels 2003-01-2880

The influence of tensile strength on fatigue strength and the effect of microstructure on fatigue notch factor were investigated into conventional mild steels, HSLA steels, DP steels and TRIP steels.
The grade of studied steels was altered from 440MPa to 780MPa. Not only smooth fatigue specimens with side surface ground but also fatigue specimens with a pierced hole were prepared for each of steel sheets. Fatigue tests were conducted in an axial load method.
These experiments made it clear that the fatigue limits of smooth specimen increase along the tensile strength approximately independent of microstructure but those of notched specimen do not necessarily increase along the tensile strength. Namely, fatigue limits of DP steels and TRIP steels with notch increase in proportion to tensile strength although those of HSLA steels with notch do not increase.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 16% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Effect of Strengthening Mechanism on Fatigue Properties of Hot-Rolled Sheet Steels

2002-01-0042

View Details

TECHNICAL PAPER

Influence of Macro Residual Stresses on the Fatigue Behavior of Smooth and Notched Specimens made from a High Strength Steel

2002-01-1408

View Details

TECHNICAL PAPER

Correlations Among Monotonic Tensile Properties and Simple Approximations that Predict Strain-Controlled Fatigue Properties of Steels

2013-01-1213

View Details

X