Thermal stability of ARMCO iron processed by ECAP

被引：20

作者：

Alberto Munoz, Jairo ^{[1
,2
]}

Fabian Higuera, Oscar ^{[1
,3
]}

Hernandez Exposito, Ana ^{[1
]}

Boulaajaj, Ahmed ^{[4
]}

Bolmaro, RaAl E. ^{[2
]}

Dumitru, Florina D. ^{[5
]}

Rodriguez Calvillo, Pablo ^{[6
]}

Jorge, Alberto Moreira, Jr. ^{[7
,8
]}

Maria Cabrera, Jose ^{[1
]}

机构：

[1] Univ Politecn Cataluna, Dept Mat Sci & Met Engn EEBE, C Eduard Maristany 10-14, Barcelona 08019, Spain

[2] Univ Nacl Rosario, Inst Fis Rosario, Consejo Nacl Invest Cient & Tecn CONICET, Ocampo & Esmeralda, RA-2000 Rosario, Santa Fe, Argentina

[3] Univ Atlantico, Mech Engn Program, Fac Engn, Barranquilla, Colombia

[4] Fundacio CTM Ctr Tecnol, Pl Ciencia 2, Manresa 08243, Spain

[5] Natl Inst Res & Dev Environm Protect, 294 Splaiul Independentei, Bucharest 060031, Romania

[6] Arcelor Mittal Global R&D Gent, JF Kennedylaan 3, B-9060 Zelzate, Belgium

[7] Univ Fed Sao Carlos, Dept Mat Engn, BR-13565905 Sao Carlos, SP, Brazil

[8] Univ Grenoble Alpes, Inst Polytech, LEPMI & SIMAP Labs, CNRS,UMR 5266, BP 75, F-38402 St Martin Dheres, France

来源：

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2018年 / 98卷 / 9-12期

关键词：

Annealing; Stored energy; Dislocations; High-angle grain boundaries and low-angle grain boundaries; SEVERE PLASTIC-DEFORMATION; ULTRAFINE-GRAINED METALS; LOW-CARBON STEEL; INTERSTITIAL-FREE STEEL; HIGH-TENSILE DUCTILITY; HIGH PURITY IRON; STORED ENERGY; MECHANICAL-PROPERTIES; MICROSTRUCTURAL EVOLUTION; HIGH-STRENGTH;

D O I：

10.1007/s00170-018-2353-7

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The thermal stability of ARMCO iron processed by equal-channel angular pressing (ECAP) up to a true strain of 16 was investigated by differential scanning calorimetry (DSC). Particularly, the analysis was focused on deriving the recrystallization behavior (onset, peak, and offset temperatures) at three different heating rates (10, 20, and 40 A degrees C/min). Additionally, the stored and activation energies were calculated. As well, the microstructure and the tensile response were evaluated at different numbers of passes before and after annealing heat treatment to assess any significant grain growth and its influence on the material ductility. The different energy contributions (dislocations, grain boundaries, and vacancies) were calculated, being verified that the main contribution came from vacancies.

引用

页码：2917 / 2932

页数：16

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