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Effect of laser welding on deformation mechanisms in irradiated austenitic stainless steel
- Source :
- Journal of Nuclear Materials. 528:151878
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- Deformation mechanism of a laser weld on neutron irradiated AISI 304L stainless steel was studied by in-situ microcompression test at room temperature. The deformation-induced austenite-to-martensite phase transformation occurs in {101}-oriented grains in the irradiated base metal, while deformation twinning prevails in {101}-oriented grains in the weld heat affected zone (HAZ). A high number density of irradiation-induced voids in the base metal provide sufficient nucleation sites for the austenite-to-martensite phase transformation under compression at room temperature. A deformation map is established to predict critical twinning stress for face-centered cubic (fcc) metals and alloys. Our study suggests that irradiation can tailor the deformation-induced phase transformation in austenitic stainless steels.
- Subjects :
- Austenite
Nuclear and High Energy Physics
Heat-affected zone
Materials science
Metallurgy
Laser beam welding
02 engineering and technology
Welding
Deformation (meteorology)
engineering.material
021001 nanoscience & nanotechnology
01 natural sciences
010305 fluids & plasmas
law.invention
Nuclear Energy and Engineering
Deformation mechanism
law
0103 physical sciences
engineering
General Materials Science
Austenitic stainless steel
0210 nano-technology
Crystal twinning
Subjects
Details
- ISSN :
- 00223115
- Volume :
- 528
- Database :
- OpenAIRE
- Journal :
- Journal of Nuclear Materials
- Accession number :
- edsair.doi...........855f4a5b94838fd1117a67610e55e909