In-situ, microscale characterization of heterogeneous deformation around notch in martensitic Shape Memory Alloy

doi:10.1016/j.msea.2019.138605

This content will become publicly available on November 1, 2020

Title: In-situ, microscale characterization of heterogeneous deformation around notch in martensitic Shape Memory Alloy

Full Record
Other Related Research

Abstract

Deformation characterization of low-symmetry phases such as martensite in SMAs is difficult due to a fine-scale hierarchical microstructure. With X-ray microLaue diffraction, in-situ deformation of martensite is examined in a notched NiTi specimen. The local deformation is influenced by the notch stress field, initial martensite microstructure, and interaction between notch stress field and the external load. The microstructure evolves heterogeneously and inelastically, with detwinning and twin nucleation occurring simultaneously through loading. These results contrast with the traditional view of martensite deformation that is partitioned in three distinct regimes: elasticity, reorientation and de-twinning.

Authors:

Paul, Partha P. ^[1]; Paranjape, Harshad M. ^[2]; Tamura, Nobumichi ^[3]; Chumlyakov, Yuri I. ^[4]; Brinson, L. Catherine ^[5]

Northwestern Univ., Evanston, IL (United States)
Colorado School of Mines, Golden, CO (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Siberian Physical Technical Inst., Tomsk (Russia)
Duke Univ., Durham, NC (United States)

Publication Date:: 2019-11-01

Research Org.:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

OSTI Identifier:: 1580412

Grant/Contract Number:: AC02-05CH11231; SC0010594

Resource Type:: Accepted Manuscript

Journal Name:: Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing

Additional Journal Information:: Journal Volume: 771; Journal Issue: C; Journal ID: ISSN 0921-5093

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Nickel Titanium; Shape Memory Alloys; Martensite deformation; Microdiffraction; Notch deformation

Citation Formats


                    Paul, Partha P., Paranjape, Harshad M., Tamura, Nobumichi, Chumlyakov, Yuri I., and Brinson, L. Catherine. In-situ, microscale characterization of heterogeneous deformation around notch in martensitic Shape Memory Alloy.  United States: N. p., 2019. 
        Web.  doi:10.1016/j.msea.2019.138605.

Copy to clipboard


                    Paul, Partha P., Paranjape, Harshad M., Tamura, Nobumichi, Chumlyakov, Yuri I., & Brinson, L. Catherine. In-situ, microscale characterization of heterogeneous deformation around notch in martensitic Shape Memory Alloy.  United States.  doi:10.1016/j.msea.2019.138605.

Copy to clipboard


                    Paul, Partha P., Paranjape, Harshad M., Tamura, Nobumichi, Chumlyakov, Yuri I., and Brinson, L. Catherine. Fri .  
        "In-situ, microscale characterization of heterogeneous deformation around notch in martensitic Shape Memory Alloy".  United States.  doi:10.1016/j.msea.2019.138605.

Copy to clipboard


                    
@article{osti_1580412,

  title        = {In-situ, microscale characterization of heterogeneous deformation around notch in martensitic Shape Memory Alloy},

  author       = {Paul, Partha P. and Paranjape, Harshad M. and Tamura, Nobumichi and Chumlyakov, Yuri I. and Brinson, L. Catherine},

  abstractNote = {Deformation characterization of low-symmetry phases such as martensite in SMAs is difficult due to a fine-scale hierarchical microstructure. With X-ray microLaue diffraction, in-situ deformation of martensite is examined in a notched NiTi specimen. The local deformation is influenced by the notch stress field, initial martensite microstructure, and interaction between notch stress field and the external load. The microstructure evolves heterogeneously and inelastically, with detwinning and twin nucleation occurring simultaneously through loading. These results contrast with the traditional view of martensite deformation that is partitioned in three distinct regimes: elasticity, reorientation and de-twinning.},

  doi          = {10.1016/j.msea.2019.138605},

  journal      = {Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing},

  number       = C,

  volume       = 771,

  place        = {United States},

  year         = {2019},

  month        = {11}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

This content will become publicly available on November 1, 2020

Publisher's Version of Record

DOI: 10.1016/j.msea.2019.138605

Other availability

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

MICROSTRUCTURE ANISOTROPY EFFECTS ON FRACTURE AND FATIGUE MECHANISMS IN SHAPE MEMORY ALLOY MARTENSITES

Technical Report Brinson, L Catherine Catherine ; Stebner, Aaron

The chief scientific object was to investigate the fatigue and fracture mechanisms in NiTi shape memory alloys, in the presence of stress concentrating factors such as micro-pores and notches. In particular, the interactions between structure (factors related to the geometry of the specimen, such as holes, pores and notches) and microstructure (related to properties of the material such as grains, secondary phases, twins) in influencing the inelastic deformation, leading up to fracture in NiTi was examined. Primarily, there were two major thrusts. The first thrust focused on fracture behavior in Shape Memory Alloys where the high crystal symmetry cubic phasemore »« less
DOI: 10.2172/1579299

Full Text Available
In situ, 3D characterization of the deformation mechanics of a superelastic NiTi shape memory alloy single crystal under multiscale constraint

Journal Article Paranjape, Harshad M. ; Paul, Partha P. ; Amin-Ahmadi, Behnam ; ... - Acta Materialia

Microstructural elements in NiTi shape memory alloys (SMAs) – precipitates, phase boundaries, inclusions, grain boundaries – can be viewed as sources of multiscale constraint that influence their deformation response. In this paper, we characterized in situ, and in 3D, the deformation and the evolution of microstructure during a tension test in a superelastic NiTi specimen containing some of these sources of constraint. The method used was far-field high-energy X-ray diffraction microscopy (ff-HEDM), complemented by electron microscopy. We simulated the local stress state in the specimen using a microstructural model informed by the experimental data. Using these combined microstructure, deformation, andmore »« less
Cited by 7
DOI: 10.1016/j.actamat.2017.11.026

Full Text Available
Asymmetry of stress-strain curves under tension and compression for NiTi shape memory alloys

Journal Article Liu, Y. ; Xie, Z. ; Van Humbeeck, J. ; ... - Acta Materialia

The stress-strain curves of polycrystalline martensitic NiTi shape memory alloys are often different for loading under tension and compression. Under tension, a flat stress-plateau occurs, while under compression, the material is quickly strain hardened and no flat stress-plateau is observed. Cyclic deformation under tension-compression also shows that it is more difficult to deform the material during compression than during tension, where an asymmetric stress-strain loop is obtained. TEM observations show that, under tension to 4% strain, martensite variants are partially reoriented via migration of variant interfaces with formation of dislocation networks mainly along the junction plane areas, and no significantlymore »« less
DOI: 10.1016/S1359-6454(98)00112-8
Influences of granular constraints and surface effects on the heterogeneity of elastic, superelastic, and plastic responses of polycrystalline shape memory alloys

Journal Article Paranjape, Harshad M. ; Paul, Partha P. ; Sharma, Hemant ; ... - Journal of the Mechanics and Physics of Solids

Deformation heterogeneities at the microstructural length-scale developed in polycrystalline shape memory alloys (SMAs) during superelastic loading are studied using both experiments and simulations. In situ X-ray diffraction, specifically the far-field high energy diffraction microscopy (ff-HEDM) technique, was used to non-destructively measure the grain-averaged statistics of position, crystal orientation, elastic strain tensor, and volume for hundreds of austenite grains in a superelastically loaded nickel-titanium (NiTi) SMA. These experimental data were also used to create a synthetic microstructure within a finite element model. The development of intragranular stresses were then simulated during tensile loading of the model using anisotropic elasticity. Driving forcesmore »« less
Cited by 5
DOI: 10.1016/j.jmps.2017.02.007

Full Text Available
Deformation mechanisms of a 20Mn TWIP steel investigated by in situ neutron diffraction and TEM

Journal Article Shen, Yongfeng ; Wang, Y. D. ; Liu, Xiaopeng ; ... - Acta Materialia

The deformation mechanisms and associated microstructure changes during tensile loading of an annealed twinning-induced plasticity (TWIP) steel with the chemical composition of Fe–20Mn–3Si–3Al–0.045C (wt.%) were systematically investigated using in situ time-of-flight (TOF) neutron diffraction in combination with postmortem transmission electron microscopy (TEM). The initial microstructure of the investigated alloy consists of equiaxed austenitic grains with the initial α´-phase of ~7% in volume. In addition to dislocation slip, twinning and two kinds of martensitic transformations from the austenite to α´- and epsilon martensites were observed as the main deformation modes during the tensile deformation. In situ neutron diffraction provides a powerfulmore »« less
DOI: 10.1016/j.actamat.2013.06.051

Similar Records