Microstructure investigation and flow behavior during thixoextrusion of M2 steel grade

被引：20

作者：

Gu, Guochao ^{[1
]}

Pesci, Raphael ^{[2
]}

Langlois, Laurent ^{[1
]}

Becker, Eric ^{[1
]}

Bigot, Regis ^{[1
]}

机构：

[1] Arts & Metiers ParisTech CER Metz, Lab Concept Fabricat Commande LCFC EA 4495, F-57078 Metz 3, France

[2] Arts & Metiers ParisTech CER Metz, Lab Etude Microstruct & Mec Mat LEM3, UMR CNRS 7239, F-57078 Metz 3, France

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2015年 / 216卷

关键词：

M2 steel grade; Microstructure; Material flow; Partial remelting; Low liquid fraction; Thixoextrusion; X-RAY MICROTOMOGRAPHY; SEMISOLID STATE; TOOL STEEL; ALUMINUM-ALLOY; RAPID COMPRESSION; COOLING SLOPE; 100CR6; THIXOFORMABILITY; QUANTIFICATION; MICROSCOPY;

D O I：

10.1016/j.jmatprotec.2014.09.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructure investigation and flow behavior during thixoforging of M2 steel parts were investigated. Partial remelting was performed at processing temperatures ranging from 1290 degrees C to 1340 degrees C corresponding to a liquid fraction range between 10% and 30% (according to differential scanning calorimetry measurements and quantitative image analyses). A conventional microstructure for thixoforming process was obtained: spherical solid grains surrounded by liquid phase. The microstructure across the heated billets was relatively homogeneous with bigger grain size near the surface. Successful thixoextrusion for producing parts was finally achieved at processing temperatures. By investigating the microstructure and load-displacement curves, different mechanisms in various forming stages were proposed. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：178 / 187

页数：10

共 36 条

[1]

Adachi M., 1996, European Patent, Patent No. [0745694, 0745694B1]

[2] INHIBITED COARSENING OF SOLID-LIQUID MICROSTRUCTURES IN SPRAY CASTING AT HIGH-VOLUME FRACTIONS OF SOLID [J].

ANNAVARAPU, S ;

DOHERTY, RD .

ACTA METALLURGICA ET MATERIALIA, 1995, 43 (08) :3207-3230

[3] A REVIEW OF THE SEMI-SOLID PROCESSING OF STEEL [J].

Atkinson, H. V. ;

Rassili, A. .

INTERNATIONAL JOURNAL OF MATERIAL FORMING, 2010, 3 :791-795

[4] Impact of experimental conditions on material response during forming of steel in semi-solid state [J].

Becker, Eric ;

Favier, Veronique ;

Bigot, Regis ;

Cezard, Pierre ;

Langlois, Laurent .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2010, 210 (11) :1482-1492

[5] Thermal exchange effects on steel thixoforming processes [J].

Becker, Eric ;

Bigot, Regis ;

Langlois, Laurent .

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2010, 48 (9-12) :913-924

[6] Some approaches on industrialization of steel thixoforging processes [J].

Bigot, Regis ;

Becker, Eric ;

Langlois, Laurent .

SEMI-SOLID PROCESSING OF ALLOYS AND COMPOSITES XII, 2013, 192-193 :521-526

[7]

Bülte R, 2004, STEEL RES INT, V75, P588

[8] Thixoforming 7075 aluminium alloys [J].

Chayong, S ;

Atkinson, HV ;

Kapranos, P .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 390 (1-2) :3-12

[9] THIXOFORMING OF SPRAY FORMED M2 TOOL STEEL [J].

Dutkiewicz, J. ;

Rogal, L. ;

Solek, K. ;

Mitura, Z. ;

Kapranos, P. .

INTERNATIONAL JOURNAL OF MATERIAL FORMING, 2010, 3 :755-758

[10] Microstructure observation and quantification of the liquid fraction of M2 steel grade in the semi-solid state, combining confocal laser scanning microscopy and X-ray microtomography [J].

Gu, G. C. ;

Pesci, R. ;

Langlois, L. ;

Becker, E. ;

Bigot, R. ;

Guo, M. X. .

ACTA MATERIALIA, 2014, 66 :118-131

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