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

[11] Effect of intercritical annealing on retained austenite characterization in textured TRIP-assisted steel sheet [J].

Emadoddin, E. ;

Akbarzadeh, A. ;

Daneshi, Gh. .

MATERIALS CHARACTERIZATION, 2006, 57 (4-5) :408-413

[12] Effect of Intercritical Annealing Temperature on Martensite and Bainite Start Temperatures After Partial Austenitization [J].

Erisir, Ersoy ;

Bilir, Oguz Gurkan .

JOM, 2016, 68 (01) :203-209

[13]

Faral OM, 1999, ISS MWSP CONF P, V37, P253

[14]

Fonstein N., 2015, Adv. High Strength Sheet Steels, P1

[15] Influence of forging and cooling rate on microstructure and properties of medium carbon microalloy forging steel [J].

Gündüz, S ;

Çapar, A .

JOURNAL OF MATERIALS SCIENCE, 2006, 41 (02) :561-564

[16] The effects of the initial martensite microstructure on the microstructure and tensile properties of intercritically annealed Fe-9Mn-0.05C steel [J].

Han, Jeongho ;

Lee, Seung-Joon ;

Jung, Jae-Gil ;

Lee, Young-Kook .

ACTA MATERIALIA, 2014, 78 :369-377

[17] Retained Austenite Stabilization Through Solute Partitioning During Intercritical Annealing in C-, Mn-, Al-, Si-, and Cr-Alloyed Steels [J].

Kang, Singon ;

De Moor, Emmanuel ;

Speer, John G. .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2015, 46A (03) :1005-1011

[18]

Kim S.I., 2008, P MAT SCI TECHN 2008, P1784

[19]

Krauss G., 2005, STEELS PROCESSING ST

[20] Empirical formula of isothermal bainite start temperature of steels [J].

Lee, YK .

JOURNAL OF MATERIALS SCIENCE LETTERS, 2002, 21 (16) :1253-1255

← 1 2 3 4 5 →