Title
Influence of Gage Length on Miniature Tensile Characterization of Powder Bed Fabricated 304L Stainless Steel
Alternative Title
Impact of Specimen Dimensions on Miniature Tensile Characterization of Powder Bed Fabricated 304L Stainless Steel
Abstract
Miniature tensile specimens with varying aspect ratios were fabricated from 304L stainless steel (SS) made using powder bed additive manufacturing (AM) process. The tensile characteristics measured from these specimens were analyzed to assess the impact of gage length. The study found no impact upon varying gage length on yield and ultimate strength measurements. However, a significant impact was observed on strain measurements. This data was also used to perform Weibull statistics to estimate the stochastic performance of the material. Fractography was performed to visually identify the types of flaws. A comparative study with specimens fabricated from cold rolled annealed 304 SS was also performed. The Weibull parameters were used to compare the variability within cold rolled annealed and AM 304L SS. This study indicates miniature tensile testing is a robust characterization technique for obtaining representative material properties.
Recommended Citation
S. Karnati et al., "Influence of Gage Length on Miniature Tensile Characterization of Powder Bed Fabricated 304L Stainless Steel," Proceedings of the 28th Solid Freeform Fabrication Symposium (2017, Austin, TX), pp. 289-306, University of Texas at Austin -- Laboratory for Freeform Fabrication (LFF), Aug 2017.
Meeting Name
28th Annual International Solid Freeform Fabrication Symposium (2017: Aug. 7-9, Austin, TX)
Department(s)
Mechanical and Aerospace Engineering
Second Department
Materials Science and Engineering
International Standard Serial Number (ISSN)
1053-2153
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2017 University of Texas at Austin -- Laboratory for Freeform Fabrication (LFF), All rights reserved.