Austenite reversion in AISI 201 austenitic stainless steel evaluated via in situ synchrotron X-ray diffraction during slow continuous annealing

被引：13

作者：

Souza Filho, I. R. ^{[1
]}

Almeida Junior, D. R. ^{[1
]}

Gauss, C. ^{[1
]}

Sandim, M. J. R. ^{[1
]}

Suzuki, P. A. ^{[1
]}

Sandim, H. R. Z. ^{[1
]}

机构：

[1] Univ Sao Paulo, Lorena Sch Engn, BR-12602810 Lorena, SP, Brazil

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2019年 / 755卷

基金：

巴西圣保罗研究基金会;

关键词：

In situ XRD synchrotron; AISI; 201; steel; Austenite reversion; Modified Williamson-Hall; Diffusion-controlled mechanism; DEFORMATION-INDUCED MARTENSITE; STRAIN-INDUCED MARTENSITE; MECHANICAL-PROPERTIES; NEUTRON-DIFFRACTION; TRANSFORMATION; MN; RECRYSTALLIZATION; MICROSTRUCTURE; STABILITY; BEHAVIOR;

D O I：

10.1016/j.msea.2019.04.014

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In situ synchrotron X-ray diffraction was used to track real-time austenite reversion in AISI 201 austenitic stainless steel deformed to a true strain of 0.34 under tensile testing. The deformed material was continuously annealed from 100 degrees C up to 800 degrees C at a heating rate of 0.05 degrees C s(-1). Phase changes and microstrain partitioning were evaluated by means of the direct comparison method and modified Williamson-Hall plots, respectively. The microstructure of the deformed steel consists of gamma, epsilon- and alpha'-martensite with volume fractions of 0.24, 0.07, and 0.69, respectively. epsilon -> gamma reversion occurs within the temperature range of 150-400 degrees C through a shear mechanism. The starting (A(s)) and finishing (A(f)) temperatures for alpha' -> gamma reversion are 486 degrees C and 770 degrees C, respectively. Three stages were distinguished for this reaction. By evaluating the crystallite size of both gamma- and alpha'-phases, it can be inferred that alpha' -> gamma reversion is diffusion-controlled. Such results were corroborated by thermodynamic simulations to assess the driving force for gamma-formation. Microstructural aspects such as gamma-nucleation sites, in-grain misorientation, grain refinement, and crystallographic texture were investigated by means of electron backscatter diffraction. Fresh formed ultrafine austenite grains hold different crystallographic orientations than those of untransformed austenite.

引用

页码：267 / 277

页数：11

共 44 条

[21] Effects of reversion and recrystallization on microstructure and mechanical properties of Nb-alloyed low-Ni high-Mn austenitic stainless steels [J].

Kisko, A. ;

Hamada, A. S. ;

Talonen, J. ;

Porter, D. ;

Karjalainen, L. P. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2016, 657 :359-370

[22] Studies on Martensite Transformation in a Metastable Austenitic Cr-Mn Stainless Steel [J].

Kisko, Anna ;

Rovatti, Ludovica ;

Misra, Devesh ;

Sahu, Puspendu ;

Talonen, Juho ;

Karjalainen, Pentti .

PHYSICAL AND NUMERICAL SIMULATION OF MATERIALS PROCESSING VII, 2013, 762 :424-+

[23] Multiscale mechanical fatigue damage of stainless steel investigated by neutron diffraction and X-ray microdiffraction [J].

Li, Runguang ;

Wang, Yan-Dong ;

Liu, Wenjun ;

Geng, Chang ;

Xie, Qingge ;

Brown, Dennis E. ;

An, Ke .

ACTA MATERIALIA, 2019, 165 :336-345

[24] Recent developments in stainless steels [J].

Lo, K. H. ;

Shek, C. H. ;

Lai, J. K. L. .

MATERIALS SCIENCE & ENGINEERING R-REPORTS, 2009, 65 (4-6) :39-104

[25] Effect of reversion annealing on the formation of nano/ultrafine grained structure in 201 austenitic stainless steel [J].

Moallemi, Mohammad ;

Najafizadeh, Abbas ;

Kermanpur, Ahmad ;

Rezaee, Ahad .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 530 :378-381

[26] Reverse α' → γ transformation mechanisms of martensitic Fe-Mn and age-hardenable Fe-Mn-Pd alloys upon fast and slow continuous heating [J].

Moszner, F. ;

Povoden-Karadeniz, E. ;

Pogatscher, S. ;

Uggowitzer, P. J. ;

Estrin, Y. ;

Gerstl, S. S. A. ;

Kozeschnik, E. ;

Loeffler, J. F. .

ACTA MATERIALIA, 2014, 72 :99-109

[27] Microstructural Evolutions During Reversion Annealing of Cold-Rolled AISI 316 Austenitic Stainless Steel [J].

Naghizadeh, Meysam ;

Mirzadeh, Hamed .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2018, 49A (06) :2248-2256

[28]

Padilha A. F., 2006, STEEL HEAT TREATMENT, P707

[29] Annealing of cold-worked austenitic stainless steels [J].

Padilha, AF ;

Plaut, RL ;

Rios, PR .

ISIJ INTERNATIONAL, 2003, 43 (02) :135-143

[30] In situ observations of ferrite-austenite transformations in duplex stainless steel weldments using synchrotron radiation [J].

Palmer, TA ;

Elmer, JW ;

Wong, J .

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2002, 7 (03) :159-171

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