Xuan Zhang, Christopher P. Carter, Yashas Satapathy, A. Tekawade, J. Park, P. Kenesei, Meimei Li
{"title":"Understanding creep behaviors of additively manufactured 316L stainless steel via void characterization","authors":"Xuan Zhang, Christopher P. Carter, Yashas Satapathy, A. Tekawade, J. Park, P. Kenesei, Meimei Li","doi":"10.1080/21663831.2023.2244969","DOIUrl":null,"url":null,"abstract":"Additively manufactured (AM) 316L stainless steel (SS) has been reported to have low creep resistance compared to its conventionally made counterparts. Herein, we quantitatively characterized the voids in a creep-ruptured AM 316L SS specimen and those in a conventional specimen ruptured under the same testing condition. The AM 316L SS contained more small creep voids and fewer large ones. 3D reconstructions showed the spatial distribution of the small voids in AM 316L SS followed the melt pool tracks, which was attributed to the grain structure unique to the laser process. The observations explained the creep behaviors of the two specimens. GRAPHICAL ABSTRACT IMPACT STATEMENT This paper reports that the grain structure resulted from the laser printing process has critical effects on the creep void formation in AM 316L SS.","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":"11 1","pages":"806 - 813"},"PeriodicalIF":8.6000,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Research Letters","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1080/21663831.2023.2244969","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Additively manufactured (AM) 316L stainless steel (SS) has been reported to have low creep resistance compared to its conventionally made counterparts. Herein, we quantitatively characterized the voids in a creep-ruptured AM 316L SS specimen and those in a conventional specimen ruptured under the same testing condition. The AM 316L SS contained more small creep voids and fewer large ones. 3D reconstructions showed the spatial distribution of the small voids in AM 316L SS followed the melt pool tracks, which was attributed to the grain structure unique to the laser process. The observations explained the creep behaviors of the two specimens. GRAPHICAL ABSTRACT IMPACT STATEMENT This paper reports that the grain structure resulted from the laser printing process has critical effects on the creep void formation in AM 316L SS.
期刊介绍：
Materials Research Letters is a high impact, open access journal that focuses on the engineering and technology of materials, materials physics and chemistry, and novel and emergent materials. It supports the materials research community by publishing original and compelling research work. The journal provides fast communications on cutting-edge materials research findings, with a primary focus on advanced metallic materials and physical metallurgy. It also considers other materials such as intermetallics, ceramics, and nanocomposites. Materials Research Letters publishes papers with significant breakthroughs in materials science, including research on unprecedented mechanical and functional properties, mechanisms for processing and formation of novel microstructures (including nanostructures, heterostructures, and hierarchical structures), and the mechanisms, physics, and chemistry responsible for the observed mechanical and functional behaviors of advanced materials. The journal accepts original research articles, original letters, perspective pieces presenting provocative and visionary opinions and views, and brief overviews of critical issues.
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