کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8023487 | 1517534 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Laser shock peening of laser additive manufactured Ti6Al4V titanium alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Laser shock peening is combined with laser additive manufacturing to modify the surface microstructures and mechanical properties of as manufactured Ti6Al4V titanium alloy. Microstructural evolution, microhardness distribution, residual stress distribution and mechanical properties are examined before and after LSP. After peening, the interplanar spacing of lattices of both α and β phases decreases without any new phase formation. Grain refinement is achieved with average grain size of α phase decreasing from 33.6 to 24.3â¯Î¼m. High density of dislocation lines, tangles, and multi-directional mechanical twins are observed. Residual stress is turned from tensile to compressive state with an affected depth of around 700â¯Î¼m. The hardening layer reveled by microhardness is around 900â¯Î¼m in depth. Grain refinement accounts for the yield strength, ultimate tensile strength, and elongation enhancements after peening.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 349, 15 September 2018, Pages 503-510
Journal: Surface and Coatings Technology - Volume 349, 15 September 2018, Pages 503-510
نویسندگان
Wei Guo, Rujian Sun, Binwen Song, Ying Zhu, Fei Li, Zhigang Che, Bo Li, Chao Guo, Lei Liu, Peng Peng,