Abstract
In this study, a series of cyclic tests on a 304L stainless steel with different loading paths were conducted. It revealed that as the non-proportionality of loading path increased, the growth rate of martensitic content became higher and its distribution among the austenitic matrix appeared more uniform. A phase transformation kinetics equation was modified to describe the effect of cumulative plastic strain, loading amplitude and loading path on martensitic transformation. A stress decomposition rule was proposed to incorporate both the non-proportional hardening and martensitic transformation hardening to describe the hardening mechanism.
| Original language | English |
|---|---|
| Pages (from-to) | 338-347 |
| Number of pages | 10 |
| Journal | International Journal of Fatigue |
| Volume | 124 |
| DOIs | |
| State | Published - Jul 2019 |
| Externally published | Yes |
Funding
The authors gratefully acknowledge financial support for this work from the National Key Research and Development Program of China (No. 2017YFC0805600 ) and the National Natural Science Foundation of China (No. 51435012 ).
Keywords
- Martensitic transformation
- Metastable austenitic stainless steels
- Non-proportional cyclic loading
- Non-proportionality of loading path
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