The effects of grain and specimen sizes on mechanical properties of type 316 austenitic stainless steel

• Published in: Journal of nuclear materials 1985-01, Vol.133, p.506-510
• Main Authors: Miyahara, K., Tada, C., Uda, T., Igata, N.
• Format: Article
• Language: English
• Subjects: Applied sciences; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Materials science; Mechanical and acoustical properties of condensed matter; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology; Metals, semimetals and alloys; Metals. Metallurgy; Other mechanical properties; Other techniques and industries; Physics; Specific materials
• ISSN: 0022-3115; 1873-4820
• DOI: 10.1016/0022-3115(85)90199-0

The effects of grain size and specimen thickness on the mechanical properties (0.2% proof stress, ultimate strength, total elongation and work hardening exponent) of specimens of type 316 austenitic stainless steels have been investigated by tensile testing at room temperature. The 0.2% proof stress and the ultimate strength of thin specimens with small grain size ( < ~ 40 μm) can be the same as for bulk material. On the other hand, the specimen thickness effect on the total elongation is large, and there is a ease where it is difficult to deduce the total elongation of bulk material from that of the thin specimen. Generally, the mechanical properties deteriorate with decreasing specimen thickness for a constant grain size.