In situ visualization of long-range defect interactions at the edge of melting

Leora E. Dresselhaus-Marais; Grethe Winther; Marylesa Howard; Arnulfo Gonzalez; Sean R. Breckling; Can Yildirim; Philip K. Cook; Mustafacan Kutsal; Hugh Simons; Carsten Detlefs; Jon H. Eggert; Henning Friis Poulsen

doi:10.1126/sciadv.abe8311

In situ visualization of long-range defect interactions at the edge of melting

Leora E. Dresselhaus-Marais^*, Grethe Winther, Marylesa Howard, Arnulfo Gonzalez, Sean R. Breckling, Can Yildirim, Philip K. Cook, Mustafacan Kutsal, Hugh Simons, Carsten Detlefs, Jon H. Eggert, Henning Friis Poulsen

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Journal article › Research › peer-review

124 Downloads (Pure)

Abstract

Connecting a bulk material's microscopic defects to its macroscopic properties is an age-old problem in materials science. Long-range interactions between dislocations (line defects) are known to play a key role in how materials deform or melt, but we lack the tools to connect these dynamics to the macroscopic properties. We introduce time-resolved dark-field x-ray microscopy to directly visualize how dislocations move and interact over hundreds of micrometers deep inside bulk aluminum. With real-time movies, we reveal the thermally activated motion and interactions of dislocations that comprise a boundary and show how weakened binding forces destabilize the structure at 99% of the melting temperature. Connecting dynamics of the microstructure to its stability, we provide important opportunities to guide and validate multiscale models that are yet untested.

Original language	English
Article number	eabe8311
Journal	Science Advances
Volume	7
Issue number	29
Number of pages	9
ISSN	2375-2548
DOIs	https://doi.org/10.1126/sciadv.abe8311
Publication status	Published - 2021

Bibliographical note

The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0
(CC BY-NC).

Access to Document

10.1126/sciadv.abe8311Licence: CC BY-NC

FulltextFinal published version, 1.94 MBLicence: CC BY-NC

OpenUrl availability

Full text

Cite this

@article{5d495ace74064aeb84422e8c25121cd9,

title = "In situ visualization of long-range defect interactions at the edge of melting",

abstract = "Connecting a bulk material's microscopic defects to its macroscopic properties is an age-old problem in materials science. Long-range interactions between dislocations (line defects) are known to play a key role in how materials deform or melt, but we lack the tools to connect these dynamics to the macroscopic properties. We introduce time-resolved dark-field x-ray microscopy to directly visualize how dislocations move and interact over hundreds of micrometers deep inside bulk aluminum. With real-time movies, we reveal the thermally activated motion and interactions of dislocations that comprise a boundary and show how weakened binding forces destabilize the structure at 99% of the melting temperature. Connecting dynamics of the microstructure to its stability, we provide important opportunities to guide and validate multiscale models that are yet untested.",

author = "Dresselhaus-Marais, {Leora E.} and Grethe Winther and Marylesa Howard and Arnulfo Gonzalez and Breckling, {Sean R.} and Can Yildirim and Cook, {Philip K.} and Mustafacan Kutsal and Hugh Simons and Carsten Detlefs and Eggert, {Jon H.} and Poulsen, {Henning Friis}",

note = "The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).",

year = "2021",

doi = "10.1126/sciadv.abe8311",

language = "English",

volume = "7",

journal = "Science Advances",

issn = "2375-2548",

publisher = "American Association for the Advancement of Science",

number = "29",

}

TY - JOUR

T1 - In situ visualization of long-range defect interactions at the edge of melting

AU - Dresselhaus-Marais, Leora E.

AU - Winther, Grethe

AU - Howard, Marylesa

AU - Gonzalez, Arnulfo

AU - Breckling, Sean R.

AU - Yildirim, Can

AU - Cook, Philip K.

AU - Kutsal, Mustafacan

AU - Simons, Hugh

AU - Detlefs, Carsten

AU - Eggert, Jon H.

AU - Poulsen, Henning Friis

N1 - The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

PY - 2021

Y1 - 2021

N2 - Connecting a bulk material's microscopic defects to its macroscopic properties is an age-old problem in materials science. Long-range interactions between dislocations (line defects) are known to play a key role in how materials deform or melt, but we lack the tools to connect these dynamics to the macroscopic properties. We introduce time-resolved dark-field x-ray microscopy to directly visualize how dislocations move and interact over hundreds of micrometers deep inside bulk aluminum. With real-time movies, we reveal the thermally activated motion and interactions of dislocations that comprise a boundary and show how weakened binding forces destabilize the structure at 99% of the melting temperature. Connecting dynamics of the microstructure to its stability, we provide important opportunities to guide and validate multiscale models that are yet untested.

AB - Connecting a bulk material's microscopic defects to its macroscopic properties is an age-old problem in materials science. Long-range interactions between dislocations (line defects) are known to play a key role in how materials deform or melt, but we lack the tools to connect these dynamics to the macroscopic properties. We introduce time-resolved dark-field x-ray microscopy to directly visualize how dislocations move and interact over hundreds of micrometers deep inside bulk aluminum. With real-time movies, we reveal the thermally activated motion and interactions of dislocations that comprise a boundary and show how weakened binding forces destabilize the structure at 99% of the melting temperature. Connecting dynamics of the microstructure to its stability, we provide important opportunities to guide and validate multiscale models that are yet untested.

U2 - 10.1126/sciadv.abe8311

DO - 10.1126/sciadv.abe8311

M3 - Journal article

C2 - 34261647

AN - SCOPUS:85110367699

SN - 2375-2548

VL - 7

JO - Science Advances

JF - Science Advances

IS - 29

M1 - eabe8311

ER -

In situ visualization of long-range defect interactions at the edge of melting

Abstract

Bibliographical note

Access to Document

OpenUrl availability

Fingerprint

Cite this