Characterization of microtexture of 316L stainless steel fiber after multi-pass drawing by electron backscatter diffraction

Journal Article · Sun Jul 15 04:00:00 EDT 2018 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2018.05.003· OSTI ID:22805058

Huang, Shih-Ju ^[1]; Chang, Liuwen ^[2]; Shyr, Tien-Wei ^[1]

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1. Department of Fiber and Composite Materials, Feng Chia University, No. 100, Wenhwa Rd., Seatwen, Taichung 40724, Taiwan, ROC (China)
2. Department of Materials and Optoelectronic Science, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, No. 70 Lienhai Rd., Kaohsiung 80424, Taiwan, ROC (China)

Highlights: • Three crystalline phases, γ, α′, and σ, in 316L stainless steel fibers are observed by XRD. • Strain-induced martensite and two types of twin boundaries are formed in drawn fibers. • The twin boundary generation is nucleate at high angle grain boundaries and then bulge into the {112}<111> grain. • A route of the formation mechanism of deformation twins was analyzed by EBSD. - Abstract: The microstructure and microtexture of 316L stainless steel fibers (SSFs) after multi-pass cold drawing with intermediate heat treatment were investigated in this study. The crystalline phases of SSFs were identified and quantified using X-ray diffraction (XRD) analysis. Grain orientation and boundary characterization in the mantle and core regions of drawing direction (DD) were analyzed through electron backscatter diffraction (EBSD). The coincident site lattice approach provides beneficial information for defining twin boundary and analyzing the orientation relationship between neighboring grains on the Σ3 segment. Three crystalline phases, γ, α, and σ, could be seen in XRD profiles. The formation mechanism of deformation twins was found, and two types of twin boundaries were observed in the drawn fibers by EBSD. The twin boundary generated between a {112}<111> grain and a <100>//DD grain is believed to nucleate at a high-angle grain boundary and then bulge into the copper grain.

• OSTI ID: 22805058
• Journal Information: Materials Characterization, Journal Name: Materials Characterization Vol. 141; ISSN 1044-5803; ISSN MACHEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BACKSCATTERING
DEFORMATION
ELECTRON DIFFRACTION
HEAT TREATMENTS
MARTENSITE
MICROSTRUCTURE
STAINLESS STEEL-316L
X-RAY DIFFRACTION