In-situ tensile deformation of Zircaloy-4 sheets with different hydrogen contents at RT and 300 °C

In this study, Fe-25Mn-xAl-8Ni-C alloys (x = 10 wt.%, 11 wt.%, 12 wt.%, 13 wt.%) were prepared by a vacuum arc melting method, and the microstructure of this series of alloys and the in situ tensile deformation behavior were studied. The results showed that Fe-25Mn-xAl-8Ni-C alloys mainly contained austenite phase with a small amount of NiAl compound. With the content of Al increasing, the amount of austenite decreased while the amount of NiAl compound increased. When the Al content increased to 12 wt.%, the interface between austenite and NiAl compound and austenitic internal started to precipitate k-carbide phase. In situ tensile results also showed that as the content of Al increased, the alloy elongation decreased gradually, and the tensile strength first increased and then decreased. When the Al content was up to 11 wt.%, the elongation and tensile strength were 2.6% and 702.5 MPa, respectively; the results of in situ tensile dynamic observations show that during the process of stretching, austenite deformed first, and crack initiation mainly occurred at the interface between austenite and NiAl compound, and propagated along the interface, resulting in fracture of the alloy.

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In-situ EBSD study of the degradation behavior in a type 316 Austenitic Stainless Steel during plastic deformation

The Journal of Strain Analysis for Engineering Design ◽

10.1177/0309324720984930 ◽

2021 ◽

pp. 030932472098493

Author(s):

Xiao Wang ◽

Yuetao Zhang ◽

Huaying Li ◽

Ming-yu Huang

Keyword(s):

Plastic Deformation ◽

Stainless Steel ◽

Austenitic Stainless Steel ◽

Tensile Deformation ◽

Target Surface ◽

Local Orientation ◽

Deformation Degree ◽

Band Contrast

Type 316 steels have been heavily utilized as the structural material in many construction equipment and infrastructures. This paper reports the characterization of degradation in 316 austenitic stainless steel during the plastic deformation. The in-situ EBSD results revealed that, with the increase of plastic strain, the band contrast (BC) value progressively decreased in both grain and grain boundaries, and the target surface becomes uneven after the plastic tensile, which indicates that the increase of surface roughness. Meanwhile, the KAM and ρGND values are low in the origin specimen but increased significantly after the in-situ tensile. The results indicated that the KAM and ρGND are closely related to the deformation degree of the materials, which can be used as the indicator for assessing the degradation of 316 steel. Besides, the re-orientation of grain occurred after the tensile deformation, which can be recognized from the lattice orientation and local orientation maps.

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Experimental study on tensile deformation process of graphitized high carbon steel sheet

Physics and Chemistry of Materials Treatment ◽

10.30791/0015-3214-2021-4-74-80 ◽

2021 ◽

Vol 4 ◽

pp. 74-80

Author(s):

Zhang Yong Jun ◽

◽

Li Xin Peng ◽

Wang Jiu Hua ◽

Han Jing Tao ◽

...

Keyword(s):

Plastic Deformation ◽

Carbon Steel ◽

Steel Sheet ◽

Tensile Deformation ◽

High Carbon Steel ◽

Ferrite Matrix ◽

High Carbon ◽

Graphite Inclusion ◽

Carbon Steel Sheet

As the object for the study, graphitized high-carbon steel sheet with a carbon content of 0.66 % was used, the tensile test of this sheet using a universal testing (breaking) machine was performed; as well as in-situ observation of the microstructure in the process of tensile deformation of this sheet using in-situ technology of scanning electron microscopy (SEM) was made. The test results show that the main mechanical properties in different directions of tested graphitized high-carbon steel sheet are relatively the same, that is, for a tensile sample of different directions, the ratio of the yield strength σ0,2 to the tensile strength σв is approximately 0.73; the strain hardening index n is approximately 0.24; the plastic deformation coefficient r is approximately 0.83. This indicates that this sheet did not exhibit significant anisotropy. In the process of tensile, deformation of the specimen is mainly developed from local plastic deformation of the graphite inclusions to the total deformation in the deformation zone of the sample; with the increase of displacement, micro-gap between the graphite inclusion and ferrite grain along the direction of the axis of tensile gradually formed and propagated along the direction perpendicular to the axis of tensile; number of slip lines in the ferrite matrix gradually increased, and the distance between them gradually decreases; when the sample breaks, in the fracture large dimple with the core of graphite inclusion and small dimples in the ferrite appears. And the ferrite matrix near the fracture is covered with slip lines, this shows that the ferritic matrix underwent severe plastic deformation before breaking.

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Heterogeneous Deformation Behavior Studied by in Situ Neutron Diffraction during Tensile Deformation for Ferrite, Martensite and Pearlite Steels

ISIJ International ◽

10.2355/isijinternational.48.525 ◽

2008 ◽

Vol 48 (4) ◽

pp. 525-530 ◽

Cited By ~ 34

Author(s):

Satoshi Morooka ◽

Yo Tomota ◽

Takashi Kamiyama

Keyword(s):

Neutron Diffraction ◽

Deformation Behavior ◽

Tensile Deformation ◽

Heterogeneous Deformation ◽

In Situ Neutron Diffraction

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In situ neutron diffraction under tensile deformation for patented pearlite steels

The Proceedings of Ibaraki District Conference ◽

10.1299/jsmeibaraki.2004.89 ◽

2004 ◽

Vol 2004 (0) ◽

pp. 89-90

Author(s):

Tomoya Shinozaki ◽

Satoshi Morooka ◽

Tetsuya Suzuki ◽

Yo Tomota

Keyword(s):

Neutron Diffraction ◽

Tensile Deformation ◽

In Situ Neutron Diffraction

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In situ observation of filler displacement during tensile deformation of nanosilica-filled natural rubber using field-emission scanning electron microscope

Composites Part A Applied Science and Manufacturing ◽

10.1016/j.compositesa.2008.11.003 ◽

2009 ◽

Vol 40 (2) ◽

pp. 232-234 ◽

Cited By ~ 10

Author(s):

Yoshimasa Urushihara ◽

Lei Li ◽

Junji Matsui ◽

Takashi Nishino

Keyword(s):

Electron Microscope ◽

Scanning Electron Microscope ◽

Natural Rubber ◽

Field Emission ◽

Tensile Deformation ◽

In Situ Observation ◽

Scanning Electron

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In Situ Synchrotron X-ray Study of the Mechanical Properties of Pure Mg Produced by Powder Metallurgy

Metals ◽

10.3390/met10091198 ◽

2020 ◽

Vol 10 (9) ◽

pp. 1198

Author(s):

Li Li ◽

Leyun Wang ◽

Jie Wang ◽

Huan Zhang ◽

Qingchun Zhu ◽

...

Keyword(s):

Powder Metallurgy ◽

Tensile Deformation ◽

Line Broadening ◽

X Ray ◽

X Ray Scattering ◽

Type Dislocation ◽

Diffraction Patterns ◽

Saxs Analysis ◽

Ray Scattering

In this study, in situ synchrotron X-ray experiments with wide-angle X-ray scattering (WAXS) and small-angle X-ray scattering (SAXS) detectors were performed on two pure magnesium materials produced by powder metallurgy. According to SAXS analysis, each of the two materials has a porosity of less than 0.5%. Line broadening analysis was performed on diffraction patterns collected by WAXS to analyze the dislocation evolution during material deformation. In both materials, <a>-type dislocation activities dominate the tensile deformation. The influence of grain size and texture on the different tensile behaviors of these two materials is also discussed.

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