کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5348334 | 1388073 | 2015 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of isothermal heat treatment on nanostructured bainite morphology and microstructures in laser cladded coatings
ترجمه فارسی عنوان
اثرات درمان حرارتی ایزوترمال بر روی مورفولوژی نانوساختار باینیت و ریزساختار در پوشش های لیزر
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
چکیده انگلیسی
Laser cladding and subsequent isothermal heat treatments have been used to fabricate nanostructured bainitic coatings. XRD has been used to determine the kinetics of bainitic transformation process. OM, SEM and TEM have been used to characterize the morphology and microstructures at different stages of transformation. The results showed that at the initial stage of bainitic transformation, the bainite sheaves are short and thin at a relatively low transformation temperature. The fully transformed bainitic microstructure obtained at a relatively high temperature present a textured morphology. The chaotic growth orientations of the sheaves and the island like of the retained austenite have been observed at the low transformation temperature. A simple model has been established to describe the microstructures and the bainite sheaves growth evolutions during the isothermal holding at the different transformed temperatures. The morphology and distribution of the bainite in the coatings were analyzed by using the nucleation and growth rate of bainitic transformation theories, which is consisted with the experiment results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 357, Part A, 1 December 2015, Pages 309-316
Journal: Applied Surface Science - Volume 357, Part A, 1 December 2015, Pages 309-316
نویسندگان
Yanbing Guo, Kai Feng, Fenggui Lu, Ke Zhang, Zhuguo Li, Seyed Reza Elmi Hosseini, Min Wang,