Kinetic study of static recrystallization in an Fe-Al-O ultra-fine-grained nanocomposite

被引：21

作者：

Bartkova, Denisa ^{[1
,2
]}

Smid, Miroslav ^{[1
]}

Masek, Bohuslav ^{[3
]}

Svoboda, Jiri ^{[1
]}

Siska, Filip ^{[1
]}

机构：

[1] Czech Acad Sci, Inst Phys Mat, Brno, Czech Republic

[2] Brno Univ Technol, Fac Mech Engn, Brno, Czech Republic

[3] COMTES FHT, Dobrany, Czech Republic

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 2017年 / 97卷 / 10期

关键词：

Recrystallization; dislocation structures; nanoscale precipitates; microstructure; abrupt grain coarsening; GROWTH; ALLOYS; PHASE; MODEL; RECOVERY;

D O I：

10.1080/09500839.2017.1378445

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A nearly abrupt coarsening of grains is observed in a newly developed Fe-Al-O ultra-fine-grained nanocomposite with a significant volume fraction (4%) of alumina nano-precipitates. The microstructure of the alloy was analysed in different states (as-received and annealed) by means of scanning electron microscopy, transmission electron microscopy (TEM) and hardness. The initial grain size 150-200nm increases up to 50m during annealing 1000 degrees C/8h and thereafter demonstrates saturation. A linear correlation between volume fraction of coarse grains and hardness was found. It was identified by TEM that alumina nano-precipitates stabilize the dislocation microstructure against recovery very effectively and the grain coarsening is due to fast growth of very few dislocation free grains. Thus, the observed grain coarsening has the attributes of static recrystallization.

引用

页码：379 / 385

页数：7

共 14 条

[1] Microstructure evolution of AISI 316L in torsion at high temperature [J].

Angella, G ;

Wynne, BP ;

Rainforth, WM ;

Beynon, JH .

ACTA MATERIALIA, 2005, 53 (05) :1263-1275

[2] Current issues in recrystallization: a review [J].

Doherty, RD ;

Hughes, DA ;

Humphreys, FJ ;

Jonas, JJ ;

Jensen, DJ ;

Kassner, ME ;

King, WE ;

McNelley, TR ;

McQueen, HJ ;

Rollett, AD .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 238 (02) :219-274

[3]

DOHERTY RD, 1963, J I MET, V91, P332

[4]

FISCHER FD, 2003, MAG, V83, P1075, DOI DOI 10.1080/0141861031000068966

[5] 2ND PHASE PARTICLE DISTRIBUTION AND SECONDARY RECRYSTALLIZATION [J].

GLADMAN, T .

SCRIPTA METALLURGICA ET MATERIALIA, 1992, 27 (11) :1569-1573

[6]

Humphreys FJ, 2017, Recrystallization and Related Annealing Phenomena, Vthird

[7] The applicability of Johnson-Mehl-Avrami model in the thermal analysis of the crystallization kinetics of glasses [J].

Malek, J .

THERMOCHIMICA ACTA, 1995, 267 :61-73

[8] Stability of binary nanocrystalline alloys against grain growth and phase separation [J].

Murdoch, Heather A. ;

Schuh, Christopher A. .

ACTA MATERIALIA, 2013, 61 (06) :2121-2132

[9] A MODEL FOR ABNORMAL GRAIN GROWTH IN NANO-CRYSTALLINE MATERIALS BASED ON ZENER DRAG FORCE [J].

Razavi-Tousi, S. S. ;

Yazdani-Rad, R. ;

Manafi, S. A. .

ARCHIVES OF METALLURGY AND MATERIALS, 2012, 57 (01) :79-85

[10] A model for strain hardening, recovery, recrystallization and grain growth with applications to forming processes of nickel base alloys [J].

Riedel, Hermann ;

Svoboda, Jiri .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2016, 665 :175-183

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