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Effect of solution treatment on microstructure and cryogenic toughness of 316LN austenite stainless steel weld metal welded by NG-MAG arc welding. FUSION ENGINEERING AND DESIGN 2017. [DOI: 10.1016/j.fusengdes.2017.11.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Pham M, Creuziger A, Iadicola M, Rollett A. Roles of texture and latent hardening on plastic anisotropy of face-centered-cubic materials during multi-axial loading. JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS 2017; 99:10.1016/j.jmps.2016.08.011. [PMID: 34248202 PMCID: PMC8272252 DOI: 10.1016/j.jmps.2016.08.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
This study investigates the joint impact of preferred texture and latent hardening on the plastic anisotropy of face centered cubic (FCC) materials. The main result is that both aspects have significant impact on the anisotropy, but the two can either counteract each other or synergistically reinforce each other to maximize anisotropy. Preferred texture results in significant anisotropy in plastic yielding. However, the latent hardening significantly alters the texture-induced anisotropy. In addition, one latent hardening type can cancel out the anisotropy of another type. Consequently, if all dislocation-based latent hardening types are included at the same level as the self-hardening, the result might not reveal the complexity of plastic anisotropy. The present study of the synergistic influence of detailed latent hardening and texture presented helps provide new insights into the complex anisotropic behavior of FCC materials during multi-axial forming.
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Affiliation(s)
- M.S. Pham
- Materials Science and Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA
- NIST Center for Automotive Lightweighting Center, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899-8553, USA
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
- Department of Materials, Imperial College London, Exhibition Road, South Kensington, London, SW7 2AZ, UK
| | - A. Creuziger
- NIST Center for Automotive Lightweighting Center, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899-8553, USA
| | - M. Iadicola
- NIST Center for Automotive Lightweighting Center, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899-8553, USA
| | - A.D. Rollett
- Materials Science and Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA
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Jeong Y, Gnäupel-Herold T, Iadicola M, Creuziger A. Uncertainty in flow stress measurements using X-ray diffraction for sheet metals subjected to large plastic deformations. J Appl Crystallogr 2016; 49:10.1107/s1600576716013662. [PMID: 34176960 PMCID: PMC8223163 DOI: 10.1107/s1600576716013662] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 08/25/2016] [Indexed: 11/10/2022] Open
Abstract
X-ray diffraction techniques have been developed to measure flow stresses of polycrystalline sheet metal specimens subjected to large plastic deformation. The uncertainty in the measured stress based on this technique has not been quantified previously owing to the lack of an appropriate method. In this article, the propagation of four selected elements of experimental error is studied on the basis of the elasto-viscoplastic self-consistent modeling framework: (1) the counting statistics error; (2) the range of tilting angles in use; (3) the use of a finite number of tilting angles; and (4) the incomplete measurement of diffraction elastic constants. Uncertainties propagated to the diffraction stress are estimated by conducting virtual experiments based on the Monte Carlo method demonstrated for a rolled interstitial-free steel sheet. A systematic report on the quantitative uncertainty is provided. It is also demonstrated that the results of the Monte Carlo virtual experiments can be used to find an optimal number of tilting angles and diffraction elastic constant measurements to use without loss of quality.
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Affiliation(s)
- Y. Jeong
- National Institute of Standards and Technology, Gaithersburg, MD, USA
- University of Maryland, College Park, MD, USA
| | - T. Gnäupel-Herold
- National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - M. Iadicola
- National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - A. Creuziger
- National Institute of Standards and Technology, Gaithersburg, MD, USA
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