Determination of the local tensile axis direction in a tem in situ strained γ′ single crystal—a finite element approach

Coujou, A.; Lours, P.; Roy, Nilima; Caillard, D.; Clément, N.

doi:10.1016/0956-7151(90)90036-g

Cited by 45 publications

(16 citation statements)

References 2 publications

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“…The specimen has usually a rectangular shape, with a hole at the center. Finite elements calculations of stress around a circular hole [2] show, as expected intuitively, that the maximum uniaxial stress is found at the sides of the hole parallel to the applied load. In real life however, holes are far from being circular.…”

mentioning

confidence: 77%

Quantitative in situ experiments and possible artifacts

Pélissier

Louchet

1993

Microsc. Microanal. Microstruct.

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mentioning

confidence: 77%

Quantitative in situ experiments and possible artifacts

Pélissier

Louchet

1993

Microsc. Microanal. Microstruct.

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“…Local values of the stress tensor have been computed in [19]. They well reproduce the macroscopic one at some given areas where observations are performed.…”

Section: Compositesmentioning

confidence: 90%

Some TEM investigations on composites, alloys-superalloys and superconductive ceramics

Galy

Sévely

Caillard

et al. 1990

Microsc. Microanal. Microstruct.

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“…The strained area shown in Fig. 2 was selected near the hole, in the region of the maximum stress in the sample [13]. There are three bands with the internal twins marked as A, B and C in Fig.…”

Section: Resultsmentioning

confidence: 99%

In-situTEM straining of tetragonal martensite of Ni-Mn-Ga alloy

Zárubová

Dlabáček

et al. 2009

ESOMAT 2009 - 8th European Symposium on Martensitic Transformations

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Abstract. The in-situ straining of tetragonal martensite of Ni-Mn-Ga alloy was studied in a transmission electron microscope (TEM) JEM 1200EX equipped with a double tilt straining stage. The sample was analyzed before and after the straining experiments using the conventional as well as high resolution TEM (Tecnai F20 G2 200kV FEG). Before straining, the martensitic structure of the samples consisted of thermally induced self-accommodated multivariants. During the in-situ straining, detwinning processes were recorded. The volume fraction of the twin variants preferably oriented to the applied tensile force increased at the expense of the less favorably oriented ones. The movement of the twin boundaries was followed in detail. The analysis performed after straining suggested that the detwinning processes occurred by movement of twinning dislocations. The interface between two twinned bands acted as a nucleation source for emitting the twinning dislocations.

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Determination of the local tensile axis direction in a tem in situ strained γ′ single crystal—a finite element approach

Cited by 45 publications

References 2 publications

Quantitative in situ experiments and possible artifacts

Quantitative in situ experiments and possible artifacts

Some TEM investigations on composites, alloys-superalloys and superconductive ceramics

In-situTEM straining of tetragonal martensite of Ni-Mn-Ga alloy

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