In-situ micro-tensile investigation of strain rate response along &lt;100&gt; and &lt;110&gt; directions in single crystal nickel

Xu, Alan; Saleh, Michael; Davis, Joel; Edwards, L.; Bhattacharyya, Dhriti

doi:10.1016/j.ijplas.2018.03.005

Cited by 41 publications

(9 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Xu et al [47] also performed experiments on the uniaxial tensile deformation of [100]− and [110]−oriented single crystal nickel and found that the single crystal nickel with the [110] orientation showed lower yield stress, higher elongation and more complex deformation behavior than the sample with the [100] orientation. There was little crystal rotation when the single crystal nickel was stretched along the [100] orientation and reached ) [44].…”

Section: Initialmentioning

confidence: 99%

Path Dependency of Plastic Deformation in Crystals: Work Hardening, Crystallographic Rotation and Dislocation Structure Evolution

Zhang

Liu

et al. 2022

Crystals

View full text Add to dashboard Cite

This paper reviewed the research progress of studies on the crystal rotation of single crystals that were deformed by tension and shear and the influences of crystal rotation and dislocation evolution on strain hardening behavior in crystals that were deformed with different initial orientations. The crystal rotation is entirely different depending on whether the single crystal was deformed by tension or shear. A three-stage work hardening behavior, which is not one of the intrinsic properties of materials, is generated when FCC metallic single crystals are deformed by tension along unstable oriFigurFigurentations, but single crystals do not exhibit this three-stage hardening behavior when they are deformed by simple shear at room temperature. Under tension, crystal rotation causes the transition from work hardening stage I to stage II, while the transition from work hardening stage II to III is caused by dislocation evolution. The evolution of the dislocation structure is related to deformation loading and can be classified into three types when a crystal is deformed by tension. Different from tension, shear stress can directly act on one of the 12 slip systems when a crystal is deformed by simple shear. When FCC single crystals are deformed by shear along the (11¯1)[110], (111)[112¯] and (001)[110] orientations, the single slip system, co-planar slip systems and co-directional slip systems are activated, respectively, and the crystals hardly rotate under the shear conditions. The slip direction of [110] forces the crystal to rotate toward the shear direction under simple shear. The dislocation tangles tend to form the dislocation cells and wall structures when multiple slip systems are activated under simple shear.

show abstract

Section: Initialmentioning

confidence: 99%

Path Dependency of Plastic Deformation in Crystals: Work Hardening, Crystallographic Rotation and Dislocation Structure Evolution

Zhang

Liu

et al. 2022

Crystals

View full text Add to dashboard Cite

show abstract

“…A Zeiss® Auriga 60 Crossbeam™ Ga FIB instrument was used to fabricate micro tensile specimens with approximate gauge dimensions of length = 17 µm × width = 5 µm × thickness = 5 µm. Details of the method by which these microtensile specimens have been manufactured can be found in Reichardt et al [27] and Xu et al [28]. In-situ microtensile testing was performed in a Zeiss® UltraPlus™ SEM using a micro-test rig (MTR-3) developed by MicroTesting Solutions® (Hilliard, U.S.A.).…”

Section: Microtensile Testingmentioning

confidence: 99%

“…Each microtensile specimen was tested in-situ under the same conditions and the stress-strain curve was obtained from the analysis of the SEM images using a Matlab® based digital image correlation code that is supplied with the MTR-3 [27] microtesting system. The stress-strain curve from each test was interpolated to obtain a more continuous curve using calibration of the load-displacement curve using the technique according to Xu et al [28]. The engineering stress-strain curve for each specimen is presented in Figure 4a.…”

Section: Unirradiated Samplesmentioning

confidence: 99%

“…Micromechanical testing is still a relatively novel technique and microtensile specimens have been manufactured using gallium FIB [19][20][21][22][23][24][25][26][27][28][29] broad ion milling on protective stencil masks [30,31] xenon 3 FIB [32] and film deposition and lithographic structuring followed by local etching [33]. Microtensile testing has been applied to ion irradiated materials and previous work considers ion irradiated nickel [27][28][29] stainless steel [21] and low alloy steel [32]. This work presents in-situ micro tensile testing together with nanoindentation of a novel manufactured RPV steel: hot isostatic pressed (HIP) SA508 grade 3 steel.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Micromechanical testing of unirradiated and helium ion irradiated SA508 reactor pressure vessel steels: Nanoindentation vs in-situ microtensile testing

Gasparrini

Short

et al. 2020

Materials Science and Engineering: A

View full text Add to dashboard Cite

“…The simulations was conducted employing crystal plasticity theory 30 . Xu et al 31 experimentally examined effect of thickness to grain size ratio on the forming limits and they presented left side of the FLD. It is shown that high values of thickness to grain size ratio had detrimental effect on formability.…”

Section: Introductionmentioning

confidence: 99%

Effects of thickness reduction in cold rolling process on the formability of sheet metals using ANFIS

Xie

Jalali

et al. 2022

Sci Rep

View full text Add to dashboard Cite

Cold rolling has detrimental effect on the formability of sheet metals. It is, however, inevitable in producing sheet high quality surfaces. The effects of cold rolling on the forming limits of stretch sheets are not investigated comprehensively in the literature. In this study, a through experimental study is conducted to observe the effect of different cold rolling thickness reduction on the formability of sheet metals. Since the experimental procedure of such tests are costly, an artificial intelligence is also adopted to predict effects of cold thickness reduction on the formability of the sheet metals. In this regard, St14 sheets are examined using tensile, metallography, cold rolling and Nakazima’s hemi-sphere punch experiments. The obtained data are further utilized to train and test an adaptive neural network fuzzy inference system (ANFIS) model. The results indicate that cold rolling reduces the formability of the sheet metals under stretch loading condition. Moreover, the tensile behavior of the sheet alters considerably due to cold thickness reduction of the same sheet metal. The trained ANFIS model also successfully trained and tested in prediction of forming limits diagrams. This model could be used to determine forming limit strains in other thickness reduction conditions. It is discussed that determination of forming limit diagrams is not an intrinsic property of a chemical composition of the sheet metals and many other factors must be taken into account.

show abstract

In-situ micro-tensile investigation of strain rate response along <100> and <110> directions in single crystal nickel

Cited by 41 publications

References 47 publications

Path Dependency of Plastic Deformation in Crystals: Work Hardening, Crystallographic Rotation and Dislocation Structure Evolution

Path Dependency of Plastic Deformation in Crystals: Work Hardening, Crystallographic Rotation and Dislocation Structure Evolution

Micromechanical testing of unirradiated and helium ion irradiated SA508 reactor pressure vessel steels: Nanoindentation vs in-situ microtensile testing

Effects of thickness reduction in cold rolling process on the formability of sheet metals using ANFIS

Contact Info

Product

Resources

About