A parametric neutron Bragg edge imaging study of additively manufactured samples treated by laser shock peening
Abstract Laser powder bed fusion is an additive manufacturing technique extensively used for the production of metallic components. Despite this process has reached a status at which parts are produced with mechanical properties comparable to those from conventional production, it is still prone to...
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Nature Portfolio
2021
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oai:doaj.org-article:b7dcf93091c2422681d7d3c39a2d227e2021-12-02T16:50:24ZA parametric neutron Bragg edge imaging study of additively manufactured samples treated by laser shock peening10.1038/s41598-021-94455-32045-2322https://doaj.org/article/b7dcf93091c2422681d7d3c39a2d227e2021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-94455-3https://doaj.org/toc/2045-2322Abstract Laser powder bed fusion is an additive manufacturing technique extensively used for the production of metallic components. Despite this process has reached a status at which parts are produced with mechanical properties comparable to those from conventional production, it is still prone to introduce detrimental tensile residual stresses towards the surfaces along the building direction, implying negative consequences on fatigue life and resistance to crack formations. Laser shock peening (LSP) is a promising method adopted to compensate tensile residual stresses and to introduce beneficial compressive residual stress on the treated surfaces. Using neutron Bragg edge imaging, we perform a parametric study of LSP applied to 316L steel samples produced by laser powder bed fusion additive manufacturing. We include in the study the novel 3D-LSP technique, where samples are LSP treated also during the building process, at intermediate build layers. The LSP energy and spot overlap were set to either 1.0 or 1.5 J and 40 $$\%$$ % or 80 $$\%$$ % respectively. The results support the use of 3D-LSP treatment with the higher LSP laser energy and overlap applied, which showed a relative increase of surface compressive residual stress (CRS) and CRS depth by 54 $$\%$$ % and 104 $$\%$$ % respectively, compared to the conventional LSP treatment.Matteo BusiNikola KalenticsManuel MorganoSeth GriffithsAnton S. TremsinTakenao ShinoharaRoland LogéChristian LeinenbachMarkus StroblNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021) |
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Medicine R Science Q Matteo Busi Nikola Kalentics Manuel Morgano Seth Griffiths Anton S. Tremsin Takenao Shinohara Roland Logé Christian Leinenbach Markus Strobl A parametric neutron Bragg edge imaging study of additively manufactured samples treated by laser shock peening |
| description |
Abstract Laser powder bed fusion is an additive manufacturing technique extensively used for the production of metallic components. Despite this process has reached a status at which parts are produced with mechanical properties comparable to those from conventional production, it is still prone to introduce detrimental tensile residual stresses towards the surfaces along the building direction, implying negative consequences on fatigue life and resistance to crack formations. Laser shock peening (LSP) is a promising method adopted to compensate tensile residual stresses and to introduce beneficial compressive residual stress on the treated surfaces. Using neutron Bragg edge imaging, we perform a parametric study of LSP applied to 316L steel samples produced by laser powder bed fusion additive manufacturing. We include in the study the novel 3D-LSP technique, where samples are LSP treated also during the building process, at intermediate build layers. The LSP energy and spot overlap were set to either 1.0 or 1.5 J and 40 $$\%$$ % or 80 $$\%$$ % respectively. The results support the use of 3D-LSP treatment with the higher LSP laser energy and overlap applied, which showed a relative increase of surface compressive residual stress (CRS) and CRS depth by 54 $$\%$$ % and 104 $$\%$$ % respectively, compared to the conventional LSP treatment. |
| format |
article |
| author |
Matteo Busi Nikola Kalentics Manuel Morgano Seth Griffiths Anton S. Tremsin Takenao Shinohara Roland Logé Christian Leinenbach Markus Strobl |
| author_facet |
Matteo Busi Nikola Kalentics Manuel Morgano Seth Griffiths Anton S. Tremsin Takenao Shinohara Roland Logé Christian Leinenbach Markus Strobl |
| author_sort |
Matteo Busi |
| title |
A parametric neutron Bragg edge imaging study of additively manufactured samples treated by laser shock peening |
| title_short |
A parametric neutron Bragg edge imaging study of additively manufactured samples treated by laser shock peening |
| title_full |
A parametric neutron Bragg edge imaging study of additively manufactured samples treated by laser shock peening |
| title_fullStr |
A parametric neutron Bragg edge imaging study of additively manufactured samples treated by laser shock peening |
| title_full_unstemmed |
A parametric neutron Bragg edge imaging study of additively manufactured samples treated by laser shock peening |
| title_sort |
parametric neutron bragg edge imaging study of additively manufactured samples treated by laser shock peening |
| publisher |
Nature Portfolio |
| publishDate |
2021 |
| url |
https://doaj.org/article/b7dcf93091c2422681d7d3c39a2d227e |
| work_keys_str_mv |
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