Irradiation-assisted pseudoelasticity in 316L stainless steel through dislocation loop-controlled martensitic phase transformations
We present pseudoelasticity activated by neutron irradiation in 316L austenitic stainless steel. Wrought and powder metallurgy with hot isostatic pressing (PM-HIP) specimens are irradiated to ∼4 displacements per atom at ∼400°C, then nanoindented. In wrought 316L, irradiation-induced voids and dislo...
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Taylor & Francis Group
2025-07-01
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| Series: | Materials Research Letters |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/21663831.2025.2509783 |
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| author | Arya Chatterjee Yu Lu Soumita Mondal Yaqiao Wu Janelle P. Wharry |
| author_facet | Arya Chatterjee Yu Lu Soumita Mondal Yaqiao Wu Janelle P. Wharry |
| author_sort | Arya Chatterjee |
| collection | DOAJ |
| description | We present pseudoelasticity activated by neutron irradiation in 316L austenitic stainless steel. Wrought and powder metallurgy with hot isostatic pressing (PM-HIP) specimens are irradiated to ∼4 displacements per atom at ∼400°C, then nanoindented. In wrought 316L, irradiation-induced voids and dislocation loops provide mechanical energy for γ→α′ martensitic transformation. But lower loop density in PM-HIP 316L changes the martensitic transformation pathway to reversible γ↔ε, enabling pseudoelasticity. Loops induce ε-martensite formation through compressive strain, with tensile strain driving ε-martensite growth. Strain recovery in PM-HIP 316L is superior to that in Fe-based shape memory alloys, providing promise for irradiation-engineered pseuoelasticity in austenitic steels. |
| format | Article |
| id | doaj-art-9509a6f145144e5fa17884a4a4d1bef0 |
| institution | Kabale University |
| issn | 2166-3831 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Materials Research Letters |
| spelling | doaj-art-9509a6f145144e5fa17884a4a4d1bef02025-08-20T03:29:28ZengTaylor & Francis GroupMaterials Research Letters2166-38312025-07-0113774975810.1080/21663831.2025.2509783Irradiation-assisted pseudoelasticity in 316L stainless steel through dislocation loop-controlled martensitic phase transformationsArya Chatterjee0Yu Lu1Soumita Mondal2Yaqiao Wu3Janelle P. Wharry4The Grainger College of Engineering, Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USACenter for Advanced Energy Studies, Idaho Falls, ID, USAThe Grainger College of Engineering, Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USACenter for Advanced Energy Studies, Idaho Falls, ID, USASchool of Materials Engineering, Purdue University, West Lafayette, IN, USAWe present pseudoelasticity activated by neutron irradiation in 316L austenitic stainless steel. Wrought and powder metallurgy with hot isostatic pressing (PM-HIP) specimens are irradiated to ∼4 displacements per atom at ∼400°C, then nanoindented. In wrought 316L, irradiation-induced voids and dislocation loops provide mechanical energy for γ→α′ martensitic transformation. But lower loop density in PM-HIP 316L changes the martensitic transformation pathway to reversible γ↔ε, enabling pseudoelasticity. Loops induce ε-martensite formation through compressive strain, with tensile strain driving ε-martensite growth. Strain recovery in PM-HIP 316L is superior to that in Fe-based shape memory alloys, providing promise for irradiation-engineered pseuoelasticity in austenitic steels.https://www.tandfonline.com/doi/10.1080/21663831.2025.2509783Martensitic transformation316L stainless steelneutron irradiationpseudoelasticity |
| spellingShingle | Arya Chatterjee Yu Lu Soumita Mondal Yaqiao Wu Janelle P. Wharry Irradiation-assisted pseudoelasticity in 316L stainless steel through dislocation loop-controlled martensitic phase transformations Materials Research Letters Martensitic transformation 316L stainless steel neutron irradiation pseudoelasticity |
| title | Irradiation-assisted pseudoelasticity in 316L stainless steel through dislocation loop-controlled martensitic phase transformations |
| title_full | Irradiation-assisted pseudoelasticity in 316L stainless steel through dislocation loop-controlled martensitic phase transformations |
| title_fullStr | Irradiation-assisted pseudoelasticity in 316L stainless steel through dislocation loop-controlled martensitic phase transformations |
| title_full_unstemmed | Irradiation-assisted pseudoelasticity in 316L stainless steel through dislocation loop-controlled martensitic phase transformations |
| title_short | Irradiation-assisted pseudoelasticity in 316L stainless steel through dislocation loop-controlled martensitic phase transformations |
| title_sort | irradiation assisted pseudoelasticity in 316l stainless steel through dislocation loop controlled martensitic phase transformations |
| topic | Martensitic transformation 316L stainless steel neutron irradiation pseudoelasticity |
| url | https://www.tandfonline.com/doi/10.1080/21663831.2025.2509783 |
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