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2573583 
Journal Article 
Possibility of applying superplastic forging to the micro forming of SUS304 
Katoh, M; Torisaka, Y 
2008 
1 
Tetsu-To-Hagane / Journal of the Iron and Steel Institute of Japan
ISSN: 0021-1575 
94 
5 
160-163 
WOS:000256016700007 
Micro forging using the superplasticity was tried, at austenitic stainless steal SUS304. The grains were refined by thermomechanical treatment with reverse transformation of strain induced martensite to austenite. The average grain size was about 250 nm. In the micro forging, Vickers indentation added to surface to grinded and polished flat die were used. The grain refined material, on the surface of the sample, it was possible to add a quadrangular pyramid. Bottom line of quadrangular pyramid were about 50 pro, and height was about 10 Pm. On the other hand, it was not able to be carried out this process. 
stainless steel; grain refinement; super plasticity; micro machine; forging