Results 211 to 220 of about 56,284 (261)

Aging kinetics of 17-4 PH stainless steel

Materials Chemistry and Physics, 2009
Abstract The influence of aging condition and the precipitation kinetics of 17-4 PH stainless steel (AISI 630) were studied in this paper. The effect of aging temperature and time in terms of tempering parameter on the strengthening behavior of this steel was modeled and analyzed by means of artificial neural networks (ANNs). The hardening, overaging
H. Mirzadeh, A. Najafizadeh
openaire   +1 more source

Biocompatibility of 17-4 PH stainless steel foam for implant applications

Bio-Medical Materials and Engineering, 2011
In this study, biocompatibility of 17-4 PH stainless steel foam for biomedical implant applications was investigated. 17-4 PH stainless steel foams having porosities in the range of 40–82% with an average pore size of around 600 μm were produced by space holder-sintering technique.
Mutlu, Ilven, Oktay, Enver
openaire   +3 more sources

Activated gas nitriding of 17-4 PH stainless steel

Surface and Coatings Technology, 2006
Results of the investigation of nitrided precipitation-hardened steel 17-4 PH surface have been presented. The layers have been created as a result of the gas nitriding process in a partly dissociated ammonia. Hydrogen chloride admixture to ammonia was used as a steel surface activator.
P. Kochmański, J. Nowacki
openaire   +1 more source

Effects of aging on the microstructure of 17-4 PH stainless steel

Materials Science and Engineering: A, 1988
Microstructures developed in commercial 17-4 PH precipitation-hardened stainless steel after different heat treatments have been studied. The martensite formed in this alloy has been found to be of a lath morphology having a dislocated substructure.
U.K. Viswanathan, S. Banerjee, R. Krishnan   +2 more
openaire   +1 more source

The rate of dynamic recrystallization in 17-4 PH stainless steel

Materials & Design, 2010
Abstract The hot working behavior of 17-4 PH stainless steel (AISI 630) was studied by hot compression test at temperatures of 950–1150 °C with strain rates of 0.001–10 s −1 . The progress of dynamic recrystallization (DRX) was modeled by the Johnson–Mehl–Avrami–Kolmogorov (JMAK) kinetics equation.
H. Mirzadeh, A. Najafizadeh
openaire   +1 more source

Localised corrosion behaviour of 17–4 PH stainless steel

Materials Science and Technology, 1990
AbstractThe localised corrosion behaviour of 17–4 PH (precipitation hardenable) stainless steel, in the solution annealed, aged, and overaged conditions, was studied in acidic chloride and sulphuric acid media using the potentiodynamic anodic polarisation method. Electrochemical potentiokinetic reactivation (EPR) studies and microstructural examination
U. Kamachi Mudali, A. K. Bhaduri, J. B. Gnanamoorthy   +2 more
openaire   +1 more source

Optimization of the Heat Treatment of a 17-4 PH Stainless Steel by Dilatometric Technique

Journal of ASTM International, 2008
Abstract The precipitation-hardening steels are generally required when high mechanical performances at high temperatures are requested both statically and dynamically. The requested combination of mechanical strength and toughness is achieved by means of an age-hardening treatment which can be carried out at different temperatures and ...
GEROSA, RICCARDO, RIVOLTA, BARBARA, A. Sala   +2 more
openaire   +3 more sources

Injection Molding of 17-4 PH Stainless Steel

SAE Technical Paper Series, 1984
<div class="htmlview paragraph">17-4 PH stainless steel has been successfully formed by powder metallurgy (P/M) injection molding. Injection molding is a relatively new P/M technique. In this process, metal powder is mixed with a plastic binder, and the part shape is injection molded as in plastics fabrication practice.
openaire   +1 more source

Failure of a 17-4 PH stainless steel sailboat propeller shaft

Engineering Failure Analysis, 2003
Abstract In this study, a 17-4 PH precipitation hardening stainless steel propeller shaft failed in use when installed in a sailboat working in a marine environment. Failure analysis was conducted on the propeller shaft. Results indicate that the failure was caused by the fracture of the propeller shaft by torsional fatigue and stress corrosion ...
C.Fahir Arisoy, Gokhan Başman, M.Kelami Şeşen   +2 more
openaire   +1 more source

Processing and properties of highly porous 17-4 PH stainless steel

Powder Metallurgy and Metal Ceramics, 2011
Highly porous 17-4 PH stainless steel having porosities in the range of 39–82% with an average pore size of around 700 μm was successfully fabricated using space holder technique in powder metallurgy. Irregular carbamide particles were used as a space holder material. The final porosity was directly related to the added fraction of carbamide.
Mutlu, Ilven, Oktay, Enver
openaire   +1 more source