Here, pulsed plasma nitriding of AISI-316L austenite stainless steel is conducted in a narrow range of temperature 510-550 °C and simultaneous combination of expanded austenite phase, and homogenous, dense chromium nitride phase is attained in a single processing unit, with relative low-cost equipment and single-step processing. The …
In the present study, compositionally-graded structures of AISI 316L and CoCrMo alloy are manufactured by powder-based laser-beam directed energy deposition (DED-LB). Through a process-integrated adjustment of powder flow, in situ alloying of the two materials becomes feasible. Thus, a sharp and a smooth transition with a mixture of …
The AISI 316L austenite stainless steel substrates 15 × 15 × 2 mm 3 in size were used in this experiment. The substrate surface was preliminary polished by abrasive machining using #1000 to #2500 sandpaper grit to obtain the profile roughness parameter R a of 0.12–0.14 μm matching the roughness class N 10. The surface layer was synthesized …
In the current study, dynamic strain ageing (DSA) phenomena in 316L austenitic stainless steel was investigated under as-received and as-welded conditions. A tensile test was carried out on as-received and as-welded samples for the temperatures of 25–800 °C at a strain rate of 1 × 10−3 s−1. Microstructure and fracture surfaces were …
AISI 316L as austenitic stainless steel has frequently been used in different sectors such as the medical, nuclear, aerospace, petroleum, and marine industries [1, 2].This wide range of applications for AISI 316L is because of its high corrosion resistance, strength, and biocompatibility characteristics [].So far, this alloy is the most well-known …
Milton et al. studied the microstructure of DED AISI 316L and revealed that Cr and Ni equivalent contents lie in the range of 5–10% δ-ferrite . Zietala et al. also investigated DED of AISI 316L and found that intercellular δ-ferrite formed at sub-grain boundaries as a consequence of its enrichment of Cr and Mo, and depletion of Ni .
AISI 316 steel has good corrosion behavior and high-temperature stability, but often prolonged exposure to temperatures close to 700 °C in aggressive environments (e.g., in boilers and furnaces, in nuclear installations) can cause problems that lead to accelerated corrosion degradation of steel components. A known solution is to prepare …
Intergranular corrosion is one of the most important processes affecting the behaviour of austenitic stainless steels. Factors such as steel chemical composition, the degree of prior deformation and the exposure temperature affect the degree of sensitisation. AISI 316L (0% CW) steel was annealed at 650 °C for 5, 10, 30, 100, 300 and 1000 h to …
In the field of metal additive manufacturing (AM), one of the most used methods is selective laser melting (SLM)—building components layer by layer in a powder bed via laser. The process of SLM is defined by several parameters like laser power, laser scanning speed, hatch spacing, or layer thickness. The manufacturing of small …
In this work, we investigate the effect of additive manufacturing parameters on the corrosion resistance of AISI 316L stainless steel used to fabricate orthopedic implants. Samples were produced by selective laser melting, where the volumetric energy density, controlled by process parameters, was varied from 19 J/mm3 to 167 J/mm3. A …
Summary. AISI 316 belongs to the austenitic stainless steel class. The addition of the alloying elements brings high corrosion resistance by the formation of a protective oxide layer on the material surface, with good ductility and thoughness. AISI 316L has lower C content, which improves the resistance to intergranular corrosion.
During Laser Powder-Directed Energy Deposition (LP-DED), many complex phenomena occur. These phenomena, which are strictly related to the conditions used during the building process, can affect the quality of the parts in terms of microstructural features and mechanical behavior. This paper investigates the effect of …
This study presents a two-fold investigation on precision end-milling of stainless steel (AISI 316L). First, the impact of end-milling variables (cutting speed and feed rate) on the surface quality (surface roughness, microhardness, and surface morphology) was analyzed. The best surface quality with surface roughness (Ra) 0.65 ± 0.02 μm was …
AISI 316 und AISI 316L sind die internationalen Bezeichnungen für folgende Werkstoffgüten: 1.4401 – X5CrNiMo17-12-2 (AISI 316) 1.4404 – X2CrNiMo17-12-2 (AISI 316L) 1.4435 – X2CrNiMo18-14-3 (AISI 316L) Die AISI 316 und AISI 316L beschreibt nichtrostende, austenitische Chrom-Nickel-Molybdän-Stähle, die eine gute Beständigkeit in nicht
Additive manufacturing (AM) is an emerging fabrication technology that offers unprecedented potential for manufacturing end-to-end complex shape customized products. However, building products with high performance by AM presents a technological challenge. Inadequate processing parameters, fabrication environment or changes in …