کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5497102 | 1530935 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study of Strength Characteristics of Steel Specimens after Selective Laser Melting of Powder Materials 17-4PH, 316L, 321
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Study of Strength Characteristics of Steel Specimens after Selective Laser Melting of Powder Materials 17-4PH, 316L, 321 Study of Strength Characteristics of Steel Specimens after Selective Laser Melting of Powder Materials 17-4PH, 316L, 321](/preview/png/5497102.png)
چکیده انگلیسی
By the method of selective laser melting of powder materials nanostructured stainless steels 17-4PH, 316L, 321 were obtained. In all experiments the recorded hardness increase depending on the construction parameters. Obtained relationship of hardness increase with the carbon ratio, which explained by the chemical composition of the metal in the melting zone. It is suggested that the effect of hardness increase is associated with structural changes as to the formation and dissolution of hardening nanophases. Methods of metallography were performed in structural studies. Traces of interlayer segregation were detected inside the grains as turbulent eddies in the bands of different saturation tone caused by the migration of convective (mass transfer) metal atoms. It was visible signs of crystallization through the grain places the image (dendrite crystals). These facts revealed structural features suggest that the adhesion layers of melted powder was initiated by the colder layers and going mechanism epitaxy by coherently oriented groups of atoms from layers of melting.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Procedia - Volume 89, 2017, Pages 179-186
Journal: Physics Procedia - Volume 89, 2017, Pages 179-186
نویسندگان
Anton Zhukov, Boris Barakhtin, Pavel Kuznetsov,