کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7975923 1514692 2016 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mechanical behavior of additive manufactured, powder-bed laser-fused materials
ترجمه فارسی عنوان
رفتار مکانیکی مواد افزودنی تولید شده با مواد پلاستیکی با لیزر پودر
کلمات کلیدی
آلیاژهای آلومینیوم، آلیاژهای تیتانیوم، آلیاژهای فولاد ضد زنگ، ترکیب فیبر پودر، خستگی سیکل،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
چکیده انگلیسی
The fatigue strengths exhibited by SLM AlSi10Mg and DMLS Ti6Al4V in the as-fabricated condition proved to be significantly inferior to that of conventional material. These lower fatigue strengths are a consequence of multiple fatigue cracks initiating at surface defects, internal voids and microcracks, and growing simultaneously during cyclic loading. Measured fatigue strengths of DMLS 316L and 17-4PH approached those of corresponding wrought materials when subjected to principal stresses aligned with the build planes. When cyclic stresses were applied across the build planes of the DMLS stainless steels, fatigue fractures often developed prematurely by separation of material. Post-processing the DMLS Ti6Al4V and SS316L with hot isostatic pressure elevated the fatigue strength significantly. Measurements of surface roughness with an optical profilometer, examinations of the material microstructures, and fractography contribute to an understanding of the mechanical behavior of the additive materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 651, 10 January 2016, Pages 198-213
نویسندگان
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