کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7222935 1470555 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of ultrasonic peening on Microstructure and properties of laser rapid forming GH4169
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Effect of ultrasonic peening on Microstructure and properties of laser rapid forming GH4169
چکیده انگلیسی
A new hybrid process of laser rapid forming (LRF) assisted by ultrasonic shot peening (LRF-USP) is proposed to improving the tensile and stress rupture properties at laser rapid forming. Based on mechanism analysis of laser rapid forming and ultrasonic shot peening, a processing model of LRF-USP is built. The special experimental equipments were designed and made. Forming experiments on the Nickel-based superalloy powders were conducted with the equipments, and the samples were analyzed by scanning electronic microscopy (SEM) and energy dispersive spectrometer (EDS). The result shows that theoretical model and experimental results are identical well with each other. During LRF-USP, USP can refine grain sizes and eliminate the residual tensile stress produced by LRF, forming a residual plastic field with compressive stresses.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - Volume 172, November 2018, Pages 443-448
نویسندگان
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