کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1602313 | 1005249 | 2006 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ni radiotracer diffusion in B2 ordered NiFeAl alloys
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
Ni bulk diffusion was measured in the B2 ordered NiFeAl alloys with a constant Al content of approximately 50Â at.%. The 63Ni radioisotope in combination with the radiotracer serial sectioning technique was applied at higher temperatures and the secondary ion mass spectrometry (64Ni isotope) was used in a low temperature range. Arrhenius-type temperature dependencies were established for all studied compositions in the temperature interval from 1050 to 1500Â K. As the Fe content x in the Ni50âxFexAl50 ternary alloys increases, the Ni diffusivity generally increases along the quasi-binary section between stoichiometric NiAl and FeAl. The activation enthalpy Q of Ni diffusion changes strongly non-monotonically in the ternary alloys between the binary end-members NiAl and FeAl revealing a pronounced minimum at the Ni40Fe10Al50 composition and a conspicuous maximum around the Ni25Fe25Al50 composition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 14, Issue 3, March 2006, Pages 308-314
Journal: Intermetallics - Volume 14, Issue 3, March 2006, Pages 308-314
نویسندگان
Sergiy Divinski, Frank Hisker, Wolfgang Löser, U. Södervall, Christian Herzig,