Cyclic deformation and fatigue behavior of additively manufactured 17–4 PH stainless steel

By Luiz Carneiro, B. Jalalahmadi, A. Ashtekar, Yanyao Jiang. International Journal of Fatigue, 2019

151 citations recorded by the source corpus.

Abstract Static and fatigue experiments were conducted on conventionally manufactured (CM) and additively manufactured (AM) 17–4 PH stainless steels in ambient air. The fatigue experiments were tested under the fully reversed strain-controlled condition with the strain amplitudes ranging from 0.15% to 1.0%. The two manufacturing conditions result in similar tensile strengths but the AM 17–4 PH stainless steel has a significantly lower ductility than that of the CM steel. The fatigue limit of the CM 17–4 PH stainless steel is approximately 640 MPa and the fatigue limit of the AM steel is approximately 300 MPa. The strain-life fatigue curves of both materials display a kink point from low cycle fatigue regime to high cycle fatigue regime. Defects and porosity from the additive manufacturing process contribute to the weakened fatigue properties and ductility of the AM stainless steel.

Subfields: Automotive Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/b24d3b6c6019ff307b6e7dee9a25cf24efc42787

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Automotive Engineering

1. M. Laleh
2. Dierk Raabe
3. M. Moyle
4. P. Kürnsteiner
5. A. Kini
6. S. Primig
7. N. Haghdadi
8. E. Jägle

In Mechanical Engineering

1. E. Jägle
2. M. Laleh
3. Dierk Raabe
4. M. Moyle
5. P. Kürnsteiner
6. A. Kini
7. S. Primig
8. N. Haghdadi

Citations in the corpus

• Additive manufacturing of steels: a review of achievements and challenges (2020, background): “[135] Carneiro L, Jalalahmadi B, Ashtekar A, Jiang Y (2019) Cyclic deformation and fatigue behavior of additively manufactured 17–4 PH stainless steel.”
• Steels in additive manufacturing: A review of their microstructure and properties (2020, background): “AM induced defects in the microstructure such as voids, oxides and un-melted particles, as well as surface defects such as enhanced surface roughness affect the material’s fatigue behaviour under cyclic loading [98,99].”
• High cycle fatigue behavior and life prediction for additively manufactured 17-4 PH stainless steel: Effect of sub-surface porosity and surface roughness (2020, unknown): “[51] for a similar material fabricated by LB-PBF in Ar environment.”