Nitrogen enrichment of AISI 409 stainless steel by solution heat treatment after plasma nitriding

Berton, Elisiane Maria; Neves, Julio Cesar Klein das; Mafra, Márcio; Borges, Paulo César

doi:10.4149/km_2017_5_317

Cited by 7 publications

(7 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Stainless steel with high chromium (18 wt. %) content will form a stable and homogenous ferritic structure [6].…”

Section: Xrd Results Following Gas Nitridingmentioning

confidence: 99%

“…Nickel, which acts as an allergen, may cause inflammation, skin irritation, allergy reactions, teratogenicity, and carcinogenicity [5]. In recent years, nickel-free stainless steel is thought as a potential biomedical device to replace SS 316L [6][7][8][9].Nickel element in austenitic stainless steel can be substituted by nitrogen or manganese or both [10]. Nitrogen is known as an austenite stabilizing element, can increase strength and corrosion resistance in stainless steel [11,12].…”

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

The effect of cold rolling and high-temperature gas nitriding on austenite phase formation in AISI 430 SS

Kartika

Kurnia

Senopati

et al. 2021

EEJET

View full text Add to dashboard Cite

Austenitic stainless steel is the most commonly used material in the production of orthopedic prostheses. In this study, AISI 430 SS (0.12 wt. % C; 1 wt. % Si; 1 wt. % Mn; 18 wt. % Cr; 0.04 wt. % P and 0.03 wt. % S) will be modified by creating austenite and removing its ferromagnetic properties via the high-temperature gas nitriding process. Cold rolling with various percentage reduction (30, 50, and 70 %) was followed by gas nitriding at a temperature of 1200 °C with holding times of 5, 7, and 9 hours, then quenching in water was carried out on as-annealed AISI 430 SS. The formation of the austenite phase was examined by XRD (x-ray diffraction). The microstructure and element dispersion were observed using SEM-EDS (scanning electron microscope-energy dispersive spectrometry), whereas the mechanical properties after gas nitriding and water quenching were determined by Vickers microhardness testing. At all stages of the gas nitriding process, the FCC iron indicated the austenite phase was visible on the alloy's surface, although the ferrite phase is still present. The intensity of austenite formation is produced by cold rolling 70 % reduction with a 5-hour gas nitriding time. Furthermore, the nitrogen layer was formed with a maximum thickness layer of approximately 3.14 µm after a 50 % reduction in cold rolling and 9 hours of gas nitriding process followed by water quenching. The hardness reached 600 HVN in this condition. This is due to the distribution of carbon that is concentrated on the surface. As the percent reduction in the cold rolling process increases, the strength of AISI 430 SS after gas nitriding can increase, causing an increase in the number of dislocations. The highest tensile strength and hardness of AISI 430 SS of 669 MPa and 271.83 HVN were obtained with a reduction of 70 %.

show abstract

“…Stainless steel with high chromium (18 wt. %) content will form a stable and homogenous ferritic structure [6].…”

Section: Xrd Results Following Gas Nitridingmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

The effect of cold rolling and high-temperature gas nitriding on austenite phase formation in AISI 430 SS

Kartika

Kurnia

Senopati

et al. 2021

EEJET

View full text Add to dashboard Cite

show abstract

“…AISI 4140 steel is a low alloy steel containing chromium and molybdenum as strengthen agents, which is widely used as structural components in automotive, agricultural, and defense industries due to its excellent mechanical properties, including high fatigue strength, abrasion, and impact resistance 1–3 . Recent plasma nitriding process has been extensively applied to further improve the hardness of the steel 4–7 . Plasma nitriding process provides the formation of a compound layer and nitrogen diffusion zone underneath, which can enhance the hardness of the steel.…”

Section: Introductionmentioning

confidence: 99%

Effect of plasma oxynitriding temperature on wear and corrosion resistance of the AISI 4140 steel

Park

Lee

Kim

et al. 2022

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

This work presents the effect of oxynitriding process at different temperature on the corrosion resistance and wear behavior of the quenching-and-temperingtreated AISI 4140 steel. The AISI 4140 was plasma nitrided at 500 • C. Subsequently, the plasma oxynitriding was performed on the nitrided AISI 4140 at different temperatures under H 2 O atmosphere. Microstructure and phases of the plasma-oxynitrided samples are investigated, indicating that phase formation of the oxide layer is strongly dependent on processing temperature during plasma oxynitriding: Formation of Fe 3 O 4 is preferred over Fe 2 O 3 at lower processing temperature. Also, it is believed that ε-Fe 2-3 N phase formed by nitriding process plays an important role to promote the formation of Fe 3 O 4 phase during plasma oxynitriding. In order to investigate the mechanical, wear, and corrosion properties of the plasma-oxynitrided samples, Vickers hardness, friction coefficient, and potentiodynamic curves are evaluated, respectively. Compared to a plasma-nitrided sample, the Vickers hardness of the plasma-oxynitrided sample at optimal processing temperature shows a slight decrease of the hardness, but, improved wear and corrosion resistances were observed. It is suggested that wear and corrosion resistance of the oxynitrided sample is strongly dependent on the volume fraction of Fe 3 O 4 phase in the oxide layer.

show abstract

“…Várias técnicas vêm sendo empregadas com o objetivo de melhorar as propriedades de superfície destes aços por meio da adição de nitrogênio em solução sólida [1][2][3][4][5][6][7]. Além da difundida técnica de nitretação por plasma à baixa temperatura, a técnica SHTPN (Solution Heat Treatment after Plasma Nitriding -Tratamento de solubilização após nitretação por plasma) tem apresentado bons resultados no tocante a obtenção de uma camada enriquecida em nitrogênio de espessura consideravelmente superior as obtidas na nitretação por plasma em baixa temperatura, sem perda da resistência à corrosão [8,9,10].…”

Section: Introductionunclassified

Obtenção de austenita expandida (fase S): Nitretação por plasma em baixa temperatura x SHTPN – Parte 3

et al. 2019

View full text Add to dashboard Cite

RESUMO Corpos de prova de aço inoxidável austenítico ISO 5832-1(similar ao AISI 316L, para aplicações biomédicas) apresentando camada superficial enrriquecida em nitrogênio (fase S), obtidos pelos processos de nitretação por plasma em baixa temperatura e SHTPN (Solution Heat Treatment after Plasma Nitriding -Tratamento de solubilização após nitretação por plasma), além de amostras não tratadas, foram testadas em ensaio de desgaste microabrasivo do tipo esfera livre. Os resultados mostraram que as superfícies nitretadas por plasma em baixa temperatura apresentam o menor coeficiente de desgaste para menores tempos de ensaio. No entanto, devido à pequena espessura de camada nitretada, com o aumento do tempo de ensaio as amostras processadas via SHTPN passam a apresentar desempenho superior, indicando que, dependendo das solicitações de desgaste, um ou outro processo apresenta o melhor desempenho.

show abstract

Nitrogen enrichment of AISI 409 stainless steel by solution heat treatment after plasma nitriding

Cited by 7 publications

References 15 publications

The effect of cold rolling and high-temperature gas nitriding on austenite phase formation in AISI 430 SS

The effect of cold rolling and high-temperature gas nitriding on austenite phase formation in AISI 430 SS

Effect of plasma oxynitriding temperature on wear and corrosion resistance of the AISI 4140 steel

Obtenção de austenita expandida (fase S): Nitretação por plasma em baixa temperatura x SHTPN – Parte 3

Contact Info

Product

Resources

About