Effect of Different Deformation on Microstructures and Properties in 304HC Austenitic Stainless Steel Wire

Abstract:

Two different components of Φ5.5mm 304HC stainless steel wires were drawn at room temperature. After the drawing tests, hard wires of Φ4.5mm, Φ3.8mm and Φ3.45mm were obtained. During the process of drawing, the stacking fault energy of the metastable austenitic stainless steel was low, which have caused strain-induced martensitic transformation. By XRD, TEM, martensitic volume fraction measurement, etc., the results show that the strain-induced martensitic transformations of the two different components were different significantly. When the deformation amount was controlled at 33% or less, a small amount of γ → α ' martensitic transformations of two steels has occurred. While the deformation arrived at 52% or more, a large amount of γ → α ' martensitic transformation has occurred. The stainless steel which has a higher Cu content will have a lower martensite content, which results from the reason that Cu has a strong inhibitory effect on the martensitic formation. In addition, the martensitic transformation can also influence properties. With the accumulation of strain, deformation mainly occurs in martensitic structure, which reduces the plasticity.

• Periodical: Materials Science Forum (Volume 788)
• Pages: 323-328
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.788.323
• Online since: April 2014
• Authors: Ren Bo Song*, Yu Pei, Yi Su Jia, Zhe Gao, Yang Xu, Peng Deng
• Keywords: 304HC Stainless Steel Wire, Plasticity, Strain-Induced Martensitic Transformation

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