About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
3D Printing of Biomaterials and Devices
|
| Presentation Title |
Microstructural Effects on Corrosion Resistance and In-Vitro Mechanical Performance of LMD Fabricated 316L Stainless Steel for Biomedical Applications |
| Author(s) |
Priyadarshini Nayak, Prekshya Nath, Indrani Sen |
| On-Site Speaker (Planned) |
Indrani Sen |
| Abstract Scope |
Laser metal deposition (LMD) is a cutting-edge additive-manufacturing technique for fabricating various orthopedic and dental implants. The present study investigates the role of microstructural evolution on corrosion and hardness of LMD-fabricated 316L stainless steel in as-built and solution-treated conditions. The solutionized specimen having uniform microstructure exhibits improved corrosion resistance in Ringer’s Lactate solution, maintained at human body temperature of 37℃. However, upon long-term immersion (up to 30 days), the as-built alloy generates thick passive film that is noted to enhance surface hardness. Furthermore, to appreciate its suitability for biomedical applications, bulk mechanical performance such as in-vitro tensile and strain-controlled incremental fatigue tests were performed in Ringer’s Lactate solution at 37 ℃, simulating the human body atmosphere. Interestingly, solutionized 316L SS shows reduced strength but improved ductility and fatigue resistance, making it promising candidates for long-term biomedical implant applications. |