| Full text | |
| Author(s): |
Ferreira Fernandes, Martin
;
dos Santos, Jefferson Rodrigo Marcelino
;
de Oliveira Velloso, Veronica Mara
;
Voorwald, Herman Jacobus Cornelis
Total Authors: 4
|
| Document type: | Journal article |
| Source: | Journal of Materials Engineering and Performance; v. 29, n. 3, p. 12-pg., 2020-02-21. |
| Abstract | |
The fatigue behavior of electrodeposited Zn-Ni alloy coating was investigated for its suitability to replace Cd coatings in AISI 4140 steel studs applied in oil and gas industries due to environmental and human health considerations. Axial fatigue tests were carried out at room temperature and statistically analyzed through two-parameter Weibull distribution. The coatings characterization included chemical composition and corrosion resistance analysis through energy-dispersive spectroscopy and salt spray tests, respectively. Furthermore, the fracture surfaces were observed using scanning electron microscopy, and the stress gradient in studs was obtained through finite element analysis. The experimental results showed that the notch sensibility was higher for high-cycle fatigue regime, varying from 0.20 to 0.61 for 10(4) and 10(5) cycles, respectively. The stress concentration effect influenced the fatigue life of the component, especially for low-stress levels, decreasing the fatigue strength in about 9% for 10(4) cycles and more than 20% for 10(5) cycles. The experimental fatigue data showed an increase in axial fatigue strength of about 8% for 10(5) cycles for electrodeposited Zn-Ni coating specimens, indicating feasibility with respect to fatigue behavior of the substitution of electrodeposited Cd for a Zn-Ni alloy. (AU) | |
| FAPESP's process: | 17/05619-0 - Analysis of the fatigue behavior of a Zinc-Nickel alloy coating as a substitution of electrodeposited cadmium for AISI 4140 steel |
| Grantee: | Martin Ferreira Fernandes |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |
| FAPESP's process: | 19/02125-1 - Study of a nanostructured Cr/CrN coating and dwell effect influence on the fatigue behavior of Ti-6Al-4V alloy at a temperature of 350°C |
| Grantee: | Martin Ferreira Fernandes |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |