Characterization of microstructure and texture across dissimilar super duplex/austenitic stainless steel weldment joint by austenitic filler metal

Eghlimi, Abbas; Shamanian, M.; Eskandarian, Masoomeh; Zabolian, Azam; Szpunar, Jerzy A.

doi:10.1016/j.matchar.2015.05.036

Cited by 53 publications

(20 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Interestingly, the content of the ferrite phase in this area showed no distinct increment which differences from the findings reported by [32,37,38]. The reasons can be marked as, firstly, higher nitrogen content lifts the austenite transformation temperature [39]; secondly, higher nickel content (10 wt.%) promotes the ferrite solves temperature by increase the nickel equilibrium value [1]; thirdly, PTA and primary austenite effectively hinders ferrite phase growth and inhibits the partition of Cr and Mo [40]. Recalling chapter 4.1, in the hightemperature region, both γ 2 (intergranular/intragranular) were observed.…”

Section: Microstructure Distribution In One Single Layermentioning

confidence: 68%

Microstructure and mechanical properties of TOP-TIG-wire and arc additive manufactured super duplex stainless steel (ER2594)

Zhang

Wang

Zhou

et al. 2019

Materials Science and Engineering: A

View full text Add to dashboard Cite

As the excellent combination of mechanical properties and corrosion resistance for super duplex stainless steel, a prospective method-Wire and Arc Additive Manufacturing-for fabricating this material was proposed, and a wall component was deposited in this study. The microstructure of the as-deposited wall was carefully analyzed along with the variation of mechanical properties. The results revealed that, in the wall-body, the austenite/ferrite phase balance was broken by the overgrowing the austenite phase. During this process, the intergranular secondary austenite leading the increase of austenite phase together with some contributions made by the precipitation of intragranular secondary austenite. Propagation of the intermetallic phases, chi and sigma phase, was not the major reason for the low impact toughness in the last layer area and the root region. Instead, the presence of CrN and "inclusions" (Cr2N and impurities) took the main responsibility not only in the impact toughness but also the ductility. The anisotropic analysis revealed that the UTS and elongation appeared distinct difference in vertical and horizontal direction samples. The varieties in YS were eliminated by the nitrogen work hardening effect to a large extent.

show abstract

Section: Microstructure Distribution In One Single Layermentioning

confidence: 68%

Microstructure and mechanical properties of TOP-TIG-wire and arc additive manufactured super duplex stainless steel (ER2594)

Zhang

Wang

Zhou

et al. 2019

Materials Science and Engineering: A

View full text Add to dashboard Cite

show abstract

“…High input heat leads to a low cooling rate, which further contributes to the change from delta-ferrite phase to austenite phase in weld metal with stainless steel [39][40][41]. Consequently, the duplex δ + γ structure will be the definitive composition of the weld metal of ASS [42][43][44][45].…”

Section: Duplex Structurementioning

confidence: 99%

Effects of Heat Input on Microstructure, Corrosion and Mechanical Characteristics of Welded Austenitic and Duplex Stainless Steels: A Review

Mohammed

Ishak

Aqida

et al. 2017

Metals

105

View full text Add to dashboard Cite

Abstract:The effects of input heat of different welding processes on the microstructure, corrosion, and mechanical characteristics of welded duplex stainless steel (DSS) are reviewed. Austenitic stainless steel (ASS) is welded using low-heat inputs. However, owing to differences in the physical metallurgy between ASS and DSS, low-heat inputs should be avoided for DSS. This review highlights the differences in solidification mode and transformation characteristics between ASS and DSS with regard to the heat input in welding processes. Specifically, many studies about the effects of heat energy input in welding process on the pitting corrosion, intergranular stress, stress-corrosion cracking, and mechanical properties of weldments of DSS are reviewed.

show abstract

“…Por otro lado, en la zona recalentada de alta temperatura, donde se genera una ferritización parcial, permanecen algunos granos austeníticos. Estos granos austeníticos se denominan generalmente Austenita Parcialmente Transformada (Apt), porque el calentamiento hace que sus elementos de aleación se difundan y, por lo tanto, cambien parcialmente su forma inicial [24]. En este trabajo se identificaron las diferentes morfologías de austenita, mencionadas anteriormente, características de los procesos de soldadura por fusión [5].…”

Section: Microscopía óPtica Y Electrónicaunclassified

Efecto del Calor Aportado y la Cantidad de Capas sobre la Evolución Microestructural en Recargues de Acero Inoxidable Dúplex

2020

View full text Add to dashboard Cite

Resumen Se estudió el efecto de la velocidad de enfriamiento y de la dilución en soldaduras de recubrimiento con un acero inoxidable dúplex, sobre una chapa de acero de bajo contenido de carbono, mediante el proceso de soldadura semiautomático con protección gaseosa. Para estudiar dichos efectos, se soldaron cupones con 0,6; 0,9 y 1,8 kJ/mm (manteniendo constante los parámetros eléctricos y variando la velocidad de soldadura) con una y dos capas. Se midió la composición química, se cuantificó el contenido de fases y se observó la precipitación de compuestos intermetálicos mediante microscopía óptica, electrónica de barrido y difracción de rayos X. Los resultados muestran que, en los cupones soldados con una capa, al aumentar el calor aportado, el contenido de ferrita aumenta asociado a la disminución de la dilución. Por otro lado, en los cupones soldados con dos capas (con bajos valores de dilución), el contenido de ferrita disminuye, asociado a la velocidad de enfriamiento y al mayor tiempo disponible para la transformación de ferrita en austenita. El equilibrio microestructural en recargues resistentes a la corrosión con aceros inoxidables dúplex está controlado, principalmente, por el grado de dilución para una capa y por el calor aportado para dos capas.

show abstract

Characterization of microstructure and texture across dissimilar super duplex/austenitic stainless steel weldment joint by austenitic filler metal

Cited by 53 publications

References 26 publications

Microstructure and mechanical properties of TOP-TIG-wire and arc additive manufactured super duplex stainless steel (ER2594)

Microstructure and mechanical properties of TOP-TIG-wire and arc additive manufactured super duplex stainless steel (ER2594)

Effects of Heat Input on Microstructure, Corrosion and Mechanical Characteristics of Welded Austenitic and Duplex Stainless Steels: A Review

Efecto del Calor Aportado y la Cantidad de Capas sobre la Evolución Microestructural en Recargues de Acero Inoxidable Dúplex

Contact Info

Product

Resources

About