The effect of particle size of iron powder on α to γ transformation in the nanostructured high nitrogen Fe-Cr-Mn-Mo stainless steel produced by mechanical alloying

被引：15

作者：

Tehrani, F. ^{[1
]}

Abbasi, M. H. ^{[1
]}

Golozar, M. A. ^{[1
]}

Panjepour, M. ^{[1
]}

机构：

[1] Isfahan Univ Technol, Dept Mat Engn, Esfahan 8415683111, Iran

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 528卷 / 12期

关键词：

Mechanical alloying; Steel; Phase transformation; Grain boundaries; Nanostructured; AUSTENITIC STEELS; WEAR;

D O I：

10.1016/j.msea.2010.12.043

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this study, the effect of particle size of iron powder on alpha to gamma transformation in the nanostructured high nitrogen Fe-18Cr-10Mn-4Mo stainless steel, produced by mechanical alloying (MA) was investigated. For this purpose iron powders with two different particle sizes were used. MA was performed under nitrogen atmosphere, using a high-energy planetary ball mill. X-ray diffraction (XRD) patterns and nitrogen analysis revealed that by decreasing the iron mean particle size, a higher transformation rate is obtained due to increase in the rate of nitrogen absorption Moreover, nitrogen solubility in both milled samples was increased noticeably by increasing the milling time. This is believed to be due to the increase of lattice defects and development of nanostructure through MA. Variations of grain size and internal lattice strain versus milling time, for both iron particle sizes, showed that the critical ferrite grain size for austenite nucleation is less than 10 nm. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：3961 / 3966

页数：6

共 29 条

[1]

Balaz P., 2000, EXTRACTIVE METALLURG

[2] Engineering structures to achieve targeted properties in steels on a nanoscale level [J].

Branagan, D. J. .

CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY, 2007, 31 (03) :343-350

[3]

Cisneros MM, 2005, METALL MATER TRANS A, V36A, P1309

[4] Development of austenitic nanostructures in high-nitrogen steel powders processed by mechanical alloying [J].

Cisneros, MM ;

López, HF ;

Mancha, H ;

Vázquez, D ;

Valdés, E ;

Mendoza, G ;

Méndez, M .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2002, 33 (07) :2139-2144

[5] Thermodynamic considerations about the formation of alloys by mechanical alloying [J].

de Lima, JC ;

dos Santos, VHF ;

Grandi, TA ;

D'Ajello, PCT ;

Dmitriev, A .

PHYSICAL REVIEW B, 2000, 62 (13) :8871-8877

[6] Grain refinement strengthening of a micro-crystalline high nitrogen austenitic stainless steel [J].

Di Schino, A ;

Kenny, JM .

MATERIALS LETTERS, 2003, 57 (12) :1830-1834

[7] Prediction of the solubility of nitrogen in steels obtained by pressurised electroslag remelting process [J].

Dimitrov, VI ;

Jekov, K ;

Avinç, A .

COMPUTATIONAL MATERIALS SCIENCE, 1999, 15 (04) :400-410

[8]

ElGammal T, 1996, ISIJ INT, V36, P915

[9] Nitrogen in iron and steel [J].

Gavriljuk, VG .

ISIJ INTERNATIONAL, 1996, 36 (07) :738-745

[10] Investigation of α to γ transformation in the production of a nanostructured high-nitrogen austenitic stainless steel powder via mechanical alloying [J].

Haghir, T. ;

Abbasi, M. H. ;

Golozar, M. A. ;

Panjepour, M. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2009, 507 (1-2) :144-148

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