DISLOCATION-STRUCTURE IN L1(2) MN-STABILIZED AL3TI DEFORMED BETWEEN 77 AND 873 K

被引：4

作者：

DOUIN, J ^{[1
]}

KUMAR, KS ^{[1
]}

VEYSSIERE, P ^{[1
]}

机构：

[1] MARTIN MARIETTA CORP LABS, BALTIMORE, MD 21227 USA

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1995年 / 192卷

关键词：

DISLOCATION; MANGANESE; ALUMINUM; TITANIUM; DEFORMATION;

D O I：

10.1016/0921-5093(94)03209-2

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Polycrystalline samples of L1, Mn-stabilized Al3Ti were deformed in compression from low temperature to the temperature of the flow stress plateau. The fine structure of the superdislocations was analyzed under weak-beam conditions with particular attention paid to the operating glide systems at different temperatures. The dissociation mode of the dislocations was also addressed in order to discriminate between antiphase boundary-coupled dislocations and Superlattice Intrinsic Stacking Fault (SISF)-coupled partial dislocations. The existence of a strong Peierls effect on undissociated (110) dislocations during deformation at 573 K is reported, as well as the observation at low temperature of dislocations with (100) and (112)Burgers vectors.

引用

页码：92 / 96

页数：5

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