In situ synchrotron X-ray diffraction analysis of ultrasonically assisted microstructure refinement during laser melting process

Tianzhao Wang; Benjamin Schneiderman; Samuel J. Clark; Andrew Chihpin Chuang; Zhenzhen Yu; Xun Liu

doi:10.1016/j.scriptamat.2023.115946

In situ synchrotron X-ray diffraction analysis of ultrasonically assisted microstructure refinement during laser melting process

Tianzhao Wang
, Benjamin Schneiderman
, Samuel J. Clark
, Andrew Chihpin Chuang
, Zhenzhen Yu
, Xun Liu

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

This work investigates the effect of ultrasonic treatment (UST) on the microstructure of AA4043 alloy during laser melting process. The study utilizes in situ synchrotron X-ray diffraction (SXRD) and postmortem electron backscatter diffraction (EBSD) techniques to examine the ultrasonic grain refinement mechanism. The SXRD diffraction patterns exhibit higher continuity of major diffraction rings in the UST-test pattern, indicating a more refined grain structure. The presence of new diffraction spots in the post-test diffraction pattern with UST suggests the breakdown of epitaxial growth of columnar dendrites during solidification. Thermal profiles determined by analyzing the lattice parameter evolution show a faster cooling rate with UST. The inverse pole figures and aspect ratio distribution from EBSD reveal that the UST samples exhibit a refined, more equiaxed grain structure along the weld centerline. UST sample also develops more fine-sized low angle grain boundaries (LAGBs). These features offer better hot-cracking resistance in aluminum alloys.

Original language	English
Article number	115946
Journal	Scripta Materialia
Volume	242
DOIs	https://doi.org/10.1016/j.scriptamat.2023.115946
State	Published - Mar 15 2024
Externally published	Yes

Funding

This work is supported by National Science Foundation , CMMI AM Award # 2044526: CAREER: Ultrasonically Assisted Wire Arc Additive Manufacturing of Metal Matrix Nanocomposites for High-strength, Lightweight Structures, and Award # 1847630. This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. Data was collected at Beamline 1-ID-E. Support from beamline staff was greatly appreciated. Electron microscopy was performed at the Center for Electron Microscopy and Analysis (CEMAS) at The Ohio State University. This work is supported by National Science Foundation, CMMI AM Award # 2044526: CAREER: Ultrasonically Assisted Wire Arc Additive Manufacturing of Metal Matrix Nanocomposites for High-strength, Lightweight Structures, and Award # 1847630. This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. Data was collected at Beamline 1-ID-E. Support from beamline staff was greatly appreciated. Electron microscopy was performed at the Center for Electron Microscopy and Analysis (CEMAS) at The Ohio State University.

Keywords

Electron backscatter diffraction
In situ synchrotron x-ray diffraction
Laser melting
Ultrasonic Treatment

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10.1016/j.scriptamat.2023.115946

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title = "In situ synchrotron X-ray diffraction analysis of ultrasonically assisted microstructure refinement during laser melting process",

abstract = "This work investigates the effect of ultrasonic treatment (UST) on the microstructure of AA4043 alloy during laser melting process. The study utilizes in situ synchrotron X-ray diffraction (SXRD) and postmortem electron backscatter diffraction (EBSD) techniques to examine the ultrasonic grain refinement mechanism. The SXRD diffraction patterns exhibit higher continuity of major diffraction rings in the UST-test pattern, indicating a more refined grain structure. The presence of new diffraction spots in the post-test diffraction pattern with UST suggests the breakdown of epitaxial growth of columnar dendrites during solidification. Thermal profiles determined by analyzing the lattice parameter evolution show a faster cooling rate with UST. The inverse pole figures and aspect ratio distribution from EBSD reveal that the UST samples exhibit a refined, more equiaxed grain structure along the weld centerline. UST sample also develops more fine-sized low angle grain boundaries (LAGBs). These features offer better hot-cracking resistance in aluminum alloys.",

keywords = "Electron backscatter diffraction, In situ synchrotron x-ray diffraction, Laser melting, Ultrasonic Treatment",

author = "Tianzhao Wang and Benjamin Schneiderman and Clark, \{Samuel J.\} and Chuang, \{Andrew Chihpin\} and Zhenzhen Yu and Xun Liu",

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doi = "10.1016/j.scriptamat.2023.115946",

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T1 - In situ synchrotron X-ray diffraction analysis of ultrasonically assisted microstructure refinement during laser melting process

AU - Wang, Tianzhao

AU - Schneiderman, Benjamin

AU - Clark, Samuel J.

AU - Chuang, Andrew Chihpin

AU - Yu, Zhenzhen

AU - Liu, Xun

PY - 2024/3/15

Y1 - 2024/3/15

N2 - This work investigates the effect of ultrasonic treatment (UST) on the microstructure of AA4043 alloy during laser melting process. The study utilizes in situ synchrotron X-ray diffraction (SXRD) and postmortem electron backscatter diffraction (EBSD) techniques to examine the ultrasonic grain refinement mechanism. The SXRD diffraction patterns exhibit higher continuity of major diffraction rings in the UST-test pattern, indicating a more refined grain structure. The presence of new diffraction spots in the post-test diffraction pattern with UST suggests the breakdown of epitaxial growth of columnar dendrites during solidification. Thermal profiles determined by analyzing the lattice parameter evolution show a faster cooling rate with UST. The inverse pole figures and aspect ratio distribution from EBSD reveal that the UST samples exhibit a refined, more equiaxed grain structure along the weld centerline. UST sample also develops more fine-sized low angle grain boundaries (LAGBs). These features offer better hot-cracking resistance in aluminum alloys.

AB - This work investigates the effect of ultrasonic treatment (UST) on the microstructure of AA4043 alloy during laser melting process. The study utilizes in situ synchrotron X-ray diffraction (SXRD) and postmortem electron backscatter diffraction (EBSD) techniques to examine the ultrasonic grain refinement mechanism. The SXRD diffraction patterns exhibit higher continuity of major diffraction rings in the UST-test pattern, indicating a more refined grain structure. The presence of new diffraction spots in the post-test diffraction pattern with UST suggests the breakdown of epitaxial growth of columnar dendrites during solidification. Thermal profiles determined by analyzing the lattice parameter evolution show a faster cooling rate with UST. The inverse pole figures and aspect ratio distribution from EBSD reveal that the UST samples exhibit a refined, more equiaxed grain structure along the weld centerline. UST sample also develops more fine-sized low angle grain boundaries (LAGBs). These features offer better hot-cracking resistance in aluminum alloys.

KW - Electron backscatter diffraction

KW - In situ synchrotron x-ray diffraction

KW - Laser melting

KW - Ultrasonic Treatment

UR - https://www.scopus.com/pages/publications/85180532897

U2 - 10.1016/j.scriptamat.2023.115946

DO - 10.1016/j.scriptamat.2023.115946

M3 - Article

AN - SCOPUS:85180532897

SN - 1359-6462

VL - 242

JO - Scripta Materialia

JF - Scripta Materialia

M1 - 115946

ER -

In situ synchrotron X-ray diffraction analysis of ultrasonically assisted microstructure refinement during laser melting process

Abstract

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