Effect of nanoscale precipitation on strengthening of ferritic ODS Fe-Cr-Al alloy

被引：12

作者：

Capdevila, C. ^{[1
]}

Chao, J. ^{[1
]}

Jimenez, J. A. ^{[1
]}

Miller, M. K. ^{[2
]}

机构：

[1] Ctr Nacl Invest Met CENIM CSIC, Madrid 28040, Spain

[2] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2013年 / 29卷 / 10期

关键词：

Phase separation; Ferrous alloy; Mechanical alloying; Tomography; Thermoelectric power; Spinodal decomposition; PHASE-SEPARATION KINETICS; THERMOELECTRIC-POWER; SPINODAL DECOMPOSITION; RECRYSTALLIZATION; TEMPERATURE; STEEL; DEFORMATION; PM2000;

D O I：

10.1179/1743284713Y.0000000215

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The kinetics of Fe rich alpha and Cr rich alpha' phase separation during aging of Fe-Cr-Al oxide dispersion strengthened alloys have been analysed with a combination of atom probe tomography and thermoelectric power measurements. The slight lattice parameter decrease measured by X-ray diffraction after thermal aging was associated with a lattice misfit between the emerging alpha and alpha' domains. The elastic strain associated with this misfit and the different elastic moduli for the alpha and alpha' phases would produce an increase in internal stresses that would retard the motion of dislocations and thus would be the main cause for the strengthening.

引用

页码：1179 / 1184

页数：6

共 31 条

[1]

Ashby M. F., 2003, ENG MAT

[2]

Austin JB, 1939, T AM I MIN MET ENG, V135, P396

[3] New Contribution to the Thermodynamics of Fe-Cr Alloys as Base for Ferritic Steels [J].