Food industry requires materials with high corrosion resistance, chemical stability, pore-free surfaces , impact resistance and thermal stress resistance. In many structural applications, food industry requires steels not only with the ability to be easily cleaned and healthy but also with high mechanical properties. In this work high performance AISI420 stainless steels were developed, improving bulk mechanical proprieties and surface characteristics such wear and corrosion resistance, the latter by different quenching techniques: laser quenching, induction quenching and vacuum quenching. Metallurgical characterization, tribological characterization, corrosion tests (polarization tests in H2SO4, Na2SO4 and NaCl solutions) have been used on treated and untreated AISI 420 steel. Results demonstrated that as expected all the three quenching techniques, due to the increase of surface hardness, highly improve wear resistance. Laser quenched and vacuum quenched samples present the best wear resistance, accompanied by a good corrosion resistance in all the solutions and conditions tested, while the induction quenching decreases the corrosion resistance even with respect to untreated material.

Influence of different quenching technique on wear and corrosion resistance of AISI 420 stainless steel / Sola, Ramona; Giovanardi, Roberto; Veronesi, Paolo; Poli, Giorgio; Parigi, G.. - (2011). (Intervento presentato al convegno 7th European Stainless Steel Conference: Science and Market tenutosi a ita nel 2011).

Influence of different quenching technique on wear and corrosion resistance of AISI 420 stainless steel

SOLA, Ramona;GIOVANARDI, Roberto;VERONESI, Paolo;POLI, Giorgio;
2011

Abstract

Food industry requires materials with high corrosion resistance, chemical stability, pore-free surfaces , impact resistance and thermal stress resistance. In many structural applications, food industry requires steels not only with the ability to be easily cleaned and healthy but also with high mechanical properties. In this work high performance AISI420 stainless steels were developed, improving bulk mechanical proprieties and surface characteristics such wear and corrosion resistance, the latter by different quenching techniques: laser quenching, induction quenching and vacuum quenching. Metallurgical characterization, tribological characterization, corrosion tests (polarization tests in H2SO4, Na2SO4 and NaCl solutions) have been used on treated and untreated AISI 420 steel. Results demonstrated that as expected all the three quenching techniques, due to the increase of surface hardness, highly improve wear resistance. Laser quenched and vacuum quenched samples present the best wear resistance, accompanied by a good corrosion resistance in all the solutions and conditions tested, while the induction quenching decreases the corrosion resistance even with respect to untreated material.
2011
7th European Stainless Steel Conference: Science and Market
ita
2011
Sola, Ramona; Giovanardi, Roberto; Veronesi, Paolo; Poli, Giorgio; Parigi, G.
Influence of different quenching technique on wear and corrosion resistance of AISI 420 stainless steel / Sola, Ramona; Giovanardi, Roberto; Veronesi, Paolo; Poli, Giorgio; Parigi, G.. - (2011). (Intervento presentato al convegno 7th European Stainless Steel Conference: Science and Market tenutosi a ita nel 2011).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1143507
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