ScholarLens Back to search
1998•Acta Metallurgica SinicaRequires access

ROOM TEMPERATURE MECHANICAL BEHAVIOR OF B2-ORDERED Fe_3Al SINGLE CRYSTALS

Zheng Wei-we

Open publisher page 0 citations

Abstract

A detailed study of room temperature mechanical behavior of B2-ordered Fe3Alsingle crystals had been conducted. It was found that the yield strength, plastic elongation and work-hardening rate were changed with orientations. The highest ductility was measured from the specimen with the orientation near [110], where the plastic elongation is 42%. In contrast, at near [100] the plastic elongation is only 14.1%. The high work-hardening rate of the orientation near [110] was confirmed to be the results of superdislocation interaction, and the dissociation of two-fold superdislocations into single dislocations led to cross-slip, which resulted in further increase in elongation. The low work-hardening rate of near [211] was due to single active slip system and the superdislocations kept two-fold until the specimen was fractured.

About this research paper

What this paper is about

A detailed study of room temperature mechanical behavior of B2-ordered Fe3Alsingle crystals had been conducted. It was found that the yield strength, plastic elongation and work-hardening rate were changed with orientations. The highest ductility was measured from the specimen with the orientation near [110], where the plastic elongation is 42%. In contrast, at near [100] the plastic elongation is only 14.1%. The high work-hardening rate of the orientation near [110] was confirmed to be the results of superdislocation interaction, and the dissociation of two-fold superdislocations into single dislocations led to cross-slip, which resulted in further increase in elongation. The low work-hardening rate of near [211] was due to single active slip system and the superdislocations kept two-fold until the specimen was fractured.

Why it matters

A significance statement is not available in the OpenAlex record.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

A detailed study of room temperature mechanical behavior of B2-ordered Fe3Alsingle crystals had been conducted. It was found that the yield strength, plastic elongation and work-hardening rate were changed with orientations. The highest ductility was measured from the specimen with the orientation near [110], where the plastic elongation is 42%. In contrast, at near [100] the plastic elongation is only 14.1%. The high work-hardening rate of the orientation near [110] was confirmed to be the results of superdislocation interaction, and the dissociation of two-fold superdislocations into single dislocations led to cross-slip, which resulted in further increase in elongation. The low work-hardening rate of near [211] was due to single active slip system and the superdislocations kept two-fold until the specimen was fractured.

Key concepts: Materials science, Elongation, Work hardening, Slip (aerodynamics), Composite material, Crystallography, Strain hardening exponent, Ductility (Earth science)

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
ROOM TEMPERATURE MECHANICAL BEHAVIOR OF B2-ORDERED Fe_3Al SINGLE CRYSTALS — Research Paper | ScholarLens