Temperature-Properties Relationships of Martensitic Stainless Steel for Improved Utilization in Surgical Tools | [Proceedings of the Pakistan Academy of Sciences: A. Physical and Computational Sciences • 2023]

Author(s):

1. Ibrar Ahmed: National Metrology Institute of Pakistan,Islamabad,Pakistan

2. Badar-ud-Din Soomro: Pakistan Institute of Technology for Minerals and Advanced Engineering Materials (PITMAEM), Pakistan Council of Scientific and Industrial Research,Lahore,Pakistan

3. Muhammad Irfan: Pakistan Institute of Technology for Minerals and Advanced Engineering Materials (PITMAEM), Pakistan Council of Scientific and Industrial Research,Lahore,Pakistan

4. Noor Faraz Khan: Pakistan Institute of Technology for Minerals and Advanced Engineering Materials (PITMAEM), Pakistan Council of Scientific and Industrial Research,Lahore,Pakistan

5. Muhammad Bilal Afzal: Pakistan Institute of Technology for Minerals and Advanced Engineering Materials (PITMAEM), Pakistan Council of Scientific and Industrial Research,Lahore,Pakistan

6. Junaid Israr: Pakistan Institute of Technology for Minerals and Advanced Engineering Materials (PITMAEM), Pakistan Council of Scientific and Industrial Research,Lahore,Pakistan

7. Ambreen Saddozai: National Metrology Institute of Pakistan,Islamabad,Pakistan

8. Muhammad Yousif: Pakistan Institute of Technology for Minerals and Advanced Engineering Materials (PITMAEM), Pakistan Council of Scientific and Industrial Research,Lahore,Pakistan

Abstract:

Sintering temperature and environment plays a very important role in strengthening powder particles of compacting surgical parts by cold powder metallurgy technique. Powder metallurgy is a process of producing components/tools by compacting finely metallic or nonmetallic powders. Generally, in the last decade, these tools were produced by conventional casting techniques but now first time in Pakistan this technique is introduced to develop surgical tools/parts. In this study, the efect of sintering behavior by varying temperatures and environments was studied. The AISI 420 Stainless steel compacted surgical parts (Scalpel and scissor) were sintered at 1000 °C to 1300 °C for 30 minutes in a vacuum and an inert environment in the presence of Argon. The compact density, microstructure and mechanical properties were studied. Microstructural characteristics like porosity, and crystalline size were studied by optical microscope. The hardness values and density of the final parts were also measured through the Rockwell hardness machine and by the Archimedes principle. Decreasing the porosity in the final parts will increase the mechanical properties of sintered parts. Adopting the present process for the development of surgical tools after further refining, the process will prove beneficial in the cost-efectiveness, time and energy saving of the present product.

Page(s): 15-21

DOI: DOI not available

Published: Journal: Proceedings of the Pakistan Academy of Sciences: A. Physical and Computational Sciences, Volume: 60, Issue: 1, Year: 2023

Keywords:

Sintering temperature , Stainless steel , Powder Metallurgy , Surgical Parts , Sintering Environment

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