I have a problem to find a good model of SUS304 mechanical behavior ( stress - strain curves ) at high temperatures ( from room temperature to 1500 celsius degree )
Thanks a lot but I want something like this at higher temperatures ( room temeperature to for example 1200 celsius degree )
this model has sus304 behavior to 800 celsius degree ...
I still think, the Information you are looking for is in the graph. In the link you'll find additional information. The stress is given in SI units rather than psi. Apparently, the temperature behaviour also depends on the grain size of the material. Hope this helps, good luck.
http://engineering.dartmouth.edu/defmech/chapter_8.htm
you may also find the followings of interest:
- Dehghan-Manshadi, A., et al. (2008). "Hot deformation and recrystallization of austenitic stainless steel: Part II. Post-deformation recrystallization." Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science 39 A(6): 1371-1381.
The postdeformation recrystallization behavior of a hot-deformed austenitic stainless steel was investigated based on the first part of this study, in which the microstructure development during hot deformation and, in particular, the evolution of dynamic recrystallization (DRX), was studied. The effect of different parameters such as strain, strain rate, and temperature were examined. The dependency of the time for 50 pct softening, t 50, changed from "strain dependent" to "strain independent" at a transition strain (ε *) that was in the steady-state area of the hot deformation flow curve. The fully recrystallized microstructure showed a similar transition in strain sensitivity. However, this occurred at stains greater than ε *. A mathematical model was developed to predict the transition strain under different deformation conditions. Microstructural measurements show that the transition strain corresponds to approximately 50 pct DRX in the deformed structure at the point of unloading. © The Minerals, Metals & Materials Society and ASM International 2008.
- Dehghan-Manshadi, A., et al. (2008). "Recrystallization in AISI 304 austenitic stainless steel during and after hot deformation." Materials Science and Engineering: A 485(1–2): 664-672.
In order to improve the understanding of the dynamic and post-dynamic recrystallization behaviours of AISI 304 austenitic stainless steel, a series of hot torsion test have been performed under a range of deformation conditions. The mechanical and microstructural features of dynamic recrystallization (DRX) were characterized to compare and contrast them with those of the post-dynamic recrystallization. A necklace type of dynamically recrystallized microstructure was observed during hot deformation at 900 °C and at a strain rate of 0.01 s−1. Following deformation, the dependency of time for 50% recrystallization, t50, changed from “strain dependent” to “strain independent” at a transition strain (ɛ*), which is significantly beyond the peak. This transition strain was clearly linked to the strain for 50% dynamic recrystallization during deformation. The interrelations between the fraction of dynamically recrystallized microstructure, the evolution of post-dynamically recrystallized microstructure and the final grain size have been established. The results also showed an important role of grain growth on softening of deformed austenite.
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