Grain Boundary Development in Post-hot-deformed Austenitic Stainless Steel

被引:0
作者
Rout, Matruprasad [1 ]
Singh, Shiv B. [2 ]
Pal, Surjya K. [3 ]
机构
[1] Natl Inst Technol Tiruchirappalli, Dept Prod Engn, Tiruchirappalli 620015, India
[2] Indian Inst Technol Kharagpur, Dept Met & Mat Engn, Kharagpur 721302, India
[3] Indian Inst Technol Kharagpur, Dept Mech Engn, Kharagpur 721302, India
关键词
CSL; grain boundary; hot-deformation; steel; twin; triple junction; CHARACTER-DISTRIBUTION; DEFORMATION MICROSTRUCTURE; DYNAMIC RECRYSTALLIZATION; MECHANICAL-PROPERTIES; ANNEALING TWINS; EVOLUTION; ALLOY; EBSD; TEXTURE; GROWTH;
D O I
10.1007/s11665-023-09039-1
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Thermo-mechanical treatment that involves cold deformation and subsequent annealing is given to the material to alter the grain boundary development. In the present work, an attempt has been made to study the grain boundary development in austenitic stainless steel subjected to hot deformation followed by isothermal holding. Axisymmetric compression tests (strain rate of 0.1 s(-1)) have been performed at temperatures of 900 degrees C, 1000 degrees C and 1100 degrees C to develop a true strain of similar to 0.16. The hot compression test was followed by isothermal holding of samples for times of 2 s, 10 s, 100 s and 1000 s. The electron backscatter diffraction study has been made on the thermo-mechanically treated samples. The developed grain boundaries were analyzed for misorientation angle, Sigma 3(n) coincidence site lattice (CSL) boundaries and triple junction (TPJ). The result shows many annealing twins characterized by Sigma 3 CSL boundary. This Sigma 3 CSL boundary breaks the material's grain boundary connectivity and significantly changes the average grain size. At temperatures 900 degrees C and 1000 degrees C, an increase in holding time leads to an increase in the fraction of triple junction J1. On the other hand, at 1100 degrees C, the fraction of J1 is not much affected by the holding time. However, an improvement in the fraction of J3, in comparison to 900 degrees C and 1000 degrees C, has been observed. A maximum value of similar to 0.12 for J2/(1 - J3) has been observed for the sample hot-deformed and held for 10 seconds at 1100 degrees C.
引用
收藏
页码:824 / 836
页数:13
相关论文
共 63 条
[1]   A micro-mechanism to explain the post-DRX grain growth at temperatures > 0.8Tm [J].
Aashranth, B. ;
Samantaray, Dipti ;
Davinci, M. Arvinth ;
Murugesan, S. ;
Borah, Utpal ;
Albert, Shaju K. ;
Bhaduri, A. K. .
MATERIALS CHARACTERIZATION, 2018, 136 :100-110
[2]  
Barbosa R., 1993, MATER SCI FORUM, V113-115, P461, DOI [10.4028/www.scientific.net/MSF.113-115.461, DOI 10.4028/WWW.SCIENTIFIC.NET/MSF.113-115.461]
[3]   Five-parameter grain boundary characterisation of randomly textured AZ31 Mg alloy [J].
Beladi, Hossein ;
Ghaderi, Alireza ;
Rohrer, Gregory S. .
PHILOSOPHICAL MAGAZINE, 2020, 100 (04) :456-466
[4]   Static Softening in a Ni-30Fe Austenitic Model Alloy After Hot Deformation: Microstructure and Texture Evolution [J].
Beladi, Hossein ;
Cizek, Pavel ;
Taylor, Adam S. ;
Rohrer, Gregory S. ;
Hodgson, Peter D. .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2017, 48A (02) :855-867
[5]   A novel approach combining grain boundary engineering and grain boundary serration to enhance high-temperature hot corrosion resistance in Alloy 617 [J].
Bhuyan, P. ;
Sanyal, S. ;
Sarma, V. Subramanya ;
de Boer, B. ;
Mitra, R. ;
Mandal, Sumantra .
MATERIALIA, 2022, 23
[6]   Asymmetric and symmetric rolling of magnesium: Evolution of microstructure, texture and mechanical properties [J].
Biswas, Somjeet ;
Kim, Dong-Ik ;
Suwas, Satyam .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2012, 550 :19-30
[7]   Viewpoint on the Formation and Evolution of Annealing Twins During Thermomechanical Processing of FCC Metals and Alloys [J].
Bozzolo, Nathalie ;
Bernacki, Marc .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2020, 51 (06) :2665-2684
[8]   STRUCTURE OF HIGH-ANGLE GRAIN BOUNDARIES [J].
BRANDON, DG .
ACTA METALLURGICA, 1966, 14 (11) :1479-&
[9]   The role of low angle grain boundary in deformation of titanium and its size effect [J].
Chen, Sijing ;
Yu, Qian .
SCRIPTA MATERIALIA, 2019, 163 (148-151) :148-151
[10]   EBSD study of grain growth behavior and annealing twin evolution after full recrystallization in a nickel-based superalloy [J].
Chen, Xiao-Min ;
Lin, Y. C. ;
Wu, Fan .
JOURNAL OF ALLOYS AND COMPOUNDS, 2017, 724 :198-207