Effect of Intercritical Annealing and Austempering on the Microstructure and Mechanical Properties of a High Silicon Manganese Steel

被引：31

作者：

Franceschi, Mattia ^{[1
]}

Pezzato, Luca ^{[1
]}

Gennari, Claudio ^{[1
]}

Fabrizi, Alberto ^{[2
]}

Polyakova, Marina ^{[3
]}

Konstantinov, Dmitry ^{[3
]}

Brunelli, Katya ^{[1
]}

Dabala, Manuele ^{[1
]}

机构：

[1] Univ Padua, Dept Ind Engn, Via Marzolo 9, I-35131 Padua, Italy

[2] Univ Padua, Dept Management & Engn, Stradella San Nicola 3, I-36100 Vicenza, Italy

[3] Nosov Magnitogorsk State Tech Univ, Dept Mech Engn & Met Technol, Pr Lenina 38, Magnitogorsk 455000, Russia

来源：

METALS | 2020年 / 10卷 / 11期

关键词：

austempering; high silicon steel; retained austenite; mechanical properties; RETAINED AUSTENITE; X-RAY; STABILITY; TRANSFORMATION; MARTENSITE; TEMPERATURE; MN; SI; MORPHOLOGY; EVOLUTION;

D O I：

10.3390/met10111448

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High Silicon Austempered steels (AHSS) are materials of great interest due to their excellent combination of high strength, ductility, toughness, and limited costs. These steel grades are characterized by a microstructure consisting of ferrite and bainite, accompanied by a high quantity retained austenite (RA). The aim of this study is to analyze the effect of an innovative heat treatment, consisting of intercritical annealing at 780 degrees C and austempering at 400 degrees C for 30 minutes, on the microstructure and mechanical properties of a novel high silicon steel (0.43C-3.26Si-2.72Mn wt.%). The microstructure was characterized by optical and electron microscopy and XRD analysis. Hardness and tensile tests were performed. A multiphase ferritic-martensitic microstructure was obtained. A hardness of 426 HV and a tensile strength of 1650 MPa were measured, with an elongation of 4.5%. The results were compared with those ones obtained with annealing and Q&T treatments.

引用

页码：1 / 19

页数：19

共 46 条

[1] Effect of Martensite Morphology on Tensile Deformation of Dual-Phase Steel [J].

Ahmad, E. ;

Manzoor, T. ;

Ziai, M. M. A. ;

Hussain, N. .

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2012, 21 (03) :382-387

[2] A DIRECT STUDY OF GRAIN-BOUNDARY ALLOTRIOMORPHIC FERRITE CRYSTALLOGRAPHY [J].

BABU, SS ;

BHADESHIA, HKDH .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1991, 142 (02) :209-219

[3]

Bhadeshia H.K.D.H., 1979, P INT C MART TRANSF, P28

[4] High-energy X-ray diffraction study on the temperature-dependent mechanical stability of retained austenite in low-alloyed TRIP steels [J].

Blonde, R. ;

Jimenez-Melero, E. ;

Zhao, L. ;

Wright, J. P. ;

Bruck, E. ;

van der Zwaag, S. ;

van Dijk, N. H. .

ACTA MATERIALIA, 2012, 60 (02) :565-577

[5] Boro-Austempering Treatment of High-Strength Bainitic Steels [J].

Bonella de Oliveira, Pedro Gabriel ;

Mariani, Pablo Edson ;

Casteletti, Luiz Carlos ;

Itman Filho, Andre ;

Neto, Amadeu Lombardi ;

Totten, George Edward .

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2020, 29 (06) :3486-3493

[6]

Carter C.B., 1996, Transmission Electron Microscopy

[7] Microstructure evolution during tempering of martensite in a medium-C steel [J].

Di Schino, Andrea ;

Di Nunzio, Paolo Emilio ;

Lopez Turconi, Gustavo .

RECRYSTALLIZATION AND GRAIN GROWTH III, PTS 1 AND 2, 2007, 558-559 :1435-+

[8]

Di Schino A, 2017, ACTA METALL SLOVACA, V23, P62, DOI 10.12776/ams.v23i1.852

[9]

DISCHINO A, 2020, METALS-BASEL, V10, DOI DOI 10.3390/MET10060808

[10] STRUCTURE-PROPERTY RELATIONSHIPS IN BAINITIC STEELS [J].

EDMONDS, DV ;

COCHRANE, RC .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1990, 21 (06) :1527-1540

← 1 2 3 4 5 →