کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5456286 1514659 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Crystallographic texture in an additively manufactured nickel-base superalloy
ترجمه فارسی عنوان
بافت کریستالوگرافی در یک ابررسانای نیکل پایه افزودنی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
چکیده انگلیسی
Laser-based directed energy deposition was used to additively manufacture a wall out of pre-alloyed powder of a nickel-base superalloy−Inconel 625. The crystallographic texture of the wall has been characterized using neutron diffraction and electron backscatter diffraction. The measured pole figures show a strong Goss texture component ({011}<100>) plus a comparatively much weaker cube component ({001}<100>), both indicating that the <100>-direction of the majority of grains lies along the laser-scanning direction (or the length direction). The origin of the Goss texture is hypothesized to be a result of the preferential <100>-oriented dendritic solidification driven by the laser-induced heat flow, which is affected by the combined effect of laser power, absorption of powder, and laser scanning speed. The texture-induced mechanical softening is also presented. This study aids in understanding the processing-structure-property relationship in additive manufacturing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 684, 27 January 2017, Pages 47-53
نویسندگان
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