Mechanical Behaviour of AISI 204 Cu Metastable Low Nickel Austenitic Stainless Steel Sheets at Various Constantly Maintained Elevated Temperatures

Authors

  • A Kanni Raj Vel Tech University - Chennai

Keywords:

Mechanical behaviour, AISI 204 stainless steel, dynamic strain ageing, martensite formation, AISI 204 stainless steel.

Abstract

Mechanical behaviour of AISI 204 austenitic stainless steel is analyzed at 298-873K and also a comparison with that of AISI 304 is done. Room temperature tensile properties are obtained based on an average of properties evaluated on specimens prepared with  specimen length axes at 0°, 45° and 90° to sheet rolling direction. Room temperature flow curves are obtained as a function of nickel content and sheet thickness. High temperature tensile properties and flow curves are obtained for 373-873K. YS and UTS are high for low nickel grades. Ductility is high for high nickel grades. Coefficients n and m are same for all grades. YS and UTS decreases with temperature, ductility increases with temperature, and n and m increases with temperature. DSA keeps ductility as maximum at 373K. DSA is more in AISI 204 and hence ductility is reduced in comparison with AISI 304.

Author Biography

  • A Kanni Raj, Vel Tech University - Chennai
    Prof.Dr.A.Kanni Raj is Nationalist of India (Poet Mahakavi Bharathi's Agni Kunjondru Kanden / Tamil Indian Patriot VOC visited our HOME and met my grant father Landlord.O.Ramiah Pillai) and Pro-Tamil (studied Tamil upto B.Sc. / > 5000years old - lingua classica virgin tamizh). Author's education includes NIT-Trichy (MME Dept), IIT-Madras (MME Dept), IIT-Delhi (Passed GATE with 98.06percentile score) & IIT-Kanpur (excelled in Centre for IC & SR works/5 Co's). PhD Thesis valued by ISRO & University of Michigan. Published >50books and >15journals.Expertised personality as PM and CM in TN. Service span of 25 years (1993-2019 till date). Currently, Working in VTU. Also, Working as Dissertation Supervisor in Kalam Research Centre (UAN:TN11A0005748, Approval by Ministry of MSME, Goverment of India) at Dharmapuri and as ED, Free Consultancy (Laxmi's Trust Reg.No: 89/13 in Sub-registrar office) at Koilpatti, near erstwhile Korkai(Pearl City). A multi-faceted teacher, ie, former PROF - BE Mech, Aero, EEE, ECE, MBA; and former DIRECTOR - M.E. Mechatronics, NBA, NPTEL & former DEAN - Personality, Profiles, FDTP and Communication / IEC; and former  PROF - B.E. Aero, Civil, ME-Cryo, ME-Aero, PhD-Sci, PhD-Eng & MS-Mech / PSNCET; and currently PROFESSOR - Chemicals, Environment, Cryofuels, Batteries, Materials, MEMS & Research in Veltech. Enough industry exposure, ie, SAIL R&D, TISCO, ISSDA, NSL and TVS. APTITUDE - Graduate Aptitude Test in Engineering (GATE)Year 1992 / Overall Score 98.06 percentile (GATE Subjects : Paper 1 -Basic Sciences and Engineering / 97.65 percentile, & Paper 2 - Chemistry / 95.51 percentile). Recently, in June 2018 - Presented 5 papers in Dubai UAE BioCore Conferences (Paper 1-Cryofuels : Mechanical Faculty, Paper 2-Bioenergetics :  Univiversity Elective, Paper 3-Bioenergetics : Biotechnology Elective, Paper 4 - High Entropy Alloys : Material, Properties, Synthesis and Applications & Paper 5-Sol Gel deposition Methods:Nanomaterial Synthesis) & Published 4 papers (Paper 1 - Creep in IJMERT /2018, Paper 2 - Cu bearing EDD steel in IJMPERD / 2019, Paper 3 - Oxidation of 310S in IJEST/2019 & Paper 4-FLD modeling in IJLTEMAS / 2019)

References

REFERENCES

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A.Kanniraj, “Plasticity and Metastability of AISI 204 Cu Austenitic Stainless Steel Sheets in Tension”, MAT : Journal of Advancements in Material Engineering, 4, 2019, pp.1-8

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Published

2019-08-21

Issue

Vol. 9 No. 2 (2019)

Section

Articles

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