skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: In-situ synchrotron X-ray diffraction study of dual-step strain variation in laser shock peened metallic glasses

Abstract

Atomic-structure evolution is significant in understanding the deformation mechanism of metallic glasses. Here, we firstly find a dual-step atomic strain variation in laser-shock-peened (LSPed) metallic glasses during compression tests by using in-situ synchrotron X-ray diffraction. Under low compressive load, LSP-deformed zone’s atomic-structure shows low Young’s Modulus (E); with load increase, atomic-structure are re-hardened, showing high E. An atomic deformation mechanism is proposed by using flow unit model, that LSP could induce interconnected flow units and 2 homogenize the atomic-structure. Furthermore, these interconnected flow units are metastable and start to annihilate during compressive loading, causing the dual-step atomic strain variation.

Authors:
 [1];  [1];  [2];  [1];  [1];  [2];  [3];  [3];  [4];  [5]
  1. Beijing Institute of Technology, Beijing (China)
  2. Beijing Institute of Technology, Beijing (China); National Key Lab. of Science and Technology on Materials under Shock and Impact, Beijing (China)
  3. Chinese Academy of Sciences, Shenyang (China)
  4. Northern Illinois Univ., DeKalb, IL (United States)
  5. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division; National Natural Science Foundation of China (NNSFC)
OSTI Identifier:
1480299
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Scripta Materialia
Additional Journal Information:
Journal Volume: 149; Journal Issue: C; Journal ID: ISSN 1359-6462
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Laser shock peening; Flow unit interconnection; In-situ synchrotron X-ray diffraction; Metallic glass

Citation Formats

Wang, Liang, Zhao, Yakai, Wang, Lu, Nie, Zhihua, Wang, Benpeng, Xue, Yunfei, Zhang, Haifeng, Fu, Huameng, Brown, Dennis E., and Ren, Yang. In-situ synchrotron X-ray diffraction study of dual-step strain variation in laser shock peened metallic glasses. United States: N. p., 2018. Web. doi:10.1016/j.scriptamat.2018.02.019.
Wang, Liang, Zhao, Yakai, Wang, Lu, Nie, Zhihua, Wang, Benpeng, Xue, Yunfei, Zhang, Haifeng, Fu, Huameng, Brown, Dennis E., & Ren, Yang. In-situ synchrotron X-ray diffraction study of dual-step strain variation in laser shock peened metallic glasses. United States. doi:10.1016/j.scriptamat.2018.02.019.
Wang, Liang, Zhao, Yakai, Wang, Lu, Nie, Zhihua, Wang, Benpeng, Xue, Yunfei, Zhang, Haifeng, Fu, Huameng, Brown, Dennis E., and Ren, Yang. Fri . "In-situ synchrotron X-ray diffraction study of dual-step strain variation in laser shock peened metallic glasses". United States. doi:10.1016/j.scriptamat.2018.02.019.
@article{osti_1480299,
title = {In-situ synchrotron X-ray diffraction study of dual-step strain variation in laser shock peened metallic glasses},
author = {Wang, Liang and Zhao, Yakai and Wang, Lu and Nie, Zhihua and Wang, Benpeng and Xue, Yunfei and Zhang, Haifeng and Fu, Huameng and Brown, Dennis E. and Ren, Yang},
abstractNote = {Atomic-structure evolution is significant in understanding the deformation mechanism of metallic glasses. Here, we firstly find a dual-step atomic strain variation in laser-shock-peened (LSPed) metallic glasses during compression tests by using in-situ synchrotron X-ray diffraction. Under low compressive load, LSP-deformed zone’s atomic-structure shows low Young’s Modulus (E); with load increase, atomic-structure are re-hardened, showing high E. An atomic deformation mechanism is proposed by using flow unit model, that LSP could induce interconnected flow units and 2 homogenize the atomic-structure. Furthermore, these interconnected flow units are metastable and start to annihilate during compressive loading, causing the dual-step atomic strain variation.},
doi = {10.1016/j.scriptamat.2018.02.019},
journal = {Scripta Materialia},
number = C,
volume = 149,
place = {United States},
year = {Fri Mar 09 00:00:00 EST 2018},
month = {Fri Mar 09 00:00:00 EST 2018}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on March 9, 2019
Publisher's Version of Record

Save / Share: