The Impact of Sintering Dwell Time on Nitrogen Absorption, Densification and Microhardness of 316L Stainless Steel Using Powder Metallurgy

Ali, Sarfraz; Rani, Ahmad Majdi Abdul; Razak, Muhammad Al’Hapis Abdul; Aliyu, Aliyu M.; Subramaniam, Krishnan

doi:10.1007/978-3-030-46036-5_22

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“…The immunological response is inhibited, and the expression of lymphocyte-surface antigens is altered due to the ion release [22,23]. Nickel, iron, and chromium ions accumulate in the tissues around the implant as corrosion products [24,25]. Among released elements, nickel has been found accountable for genotoxic and mutagenic activities, cancer, eczema, and skin itching [26,27].…”

Section: Introductionmentioning

confidence: 99%

“…To increase the performance of this material, the behaviour of simultaneous additions of boron, titanium, and niobium in stainless steel alloy can be examined. For producing a protective surface layer, consolidation factors such as compaction pressure, sintering temperature, and dwell time have not been explored in our previous studies [15,25,38,[40][41][42][43]. This research work examines the effect of material composition on the physical and mechanical properties of modified 316L stainless steel alloy.…”

Section: Introductionmentioning

confidence: 99%

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Microstructure and Mechanical Properties of Modified 316L Stainless Steel Alloy for Biomedical Applications Using Powder Metallurgy

et al. 2022

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AISI 316L stainless steel (SS) is one of the extensively used biomaterials to produce implants and medical devices. It provides a low-cost solution with ample mechanical properties, corrosion resistance, and biocompatibility compared to its counterpart materials. However, the implants made of this material are subjected to a short life span in human physiological conditions leading to the leaching of metal ions, thus limiting its use as a biomaterial. In this research, the addition of boron, titanium, and niobium with varying concentrations in the SS matrix has been explored. This paper explores the impact of material composition on modified SS alloy’s physical and mechanical properties. The study’s outcomes specify that the microhardness increases for all the alloy compositions, with a maximum increase of 64.68% for the 2 wt.% niobium added SS alloy. On the other hand, the tensile strength decreased to 297.40 MPa for the alloy containing 0.25 wt.% boron and 2 wt.% titanium additions compared to a tensile strength of 572.50 MPa for pure SS. The compression strength increased from 776 MPa for pure SS to 1408 MPa for the alloy containing niobium and titanium additions in equal concentrations.

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