کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1630656 | 1516678 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Precipitation behaviors of X70 acicular ferrite pipeline steel
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Precipitation behaviors of X70 acicular ferrite pipeline steel Precipitation behaviors of X70 acicular ferrite pipeline steel](/preview/png/1630656.png)
چکیده انگلیسی
The morphology, structure, and chemical composition of precipitates in the final microstructure of Nb-V-Ti microalloyed X70 acicular ferrite pipeline steel were investigated using transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDS). Precipitates observed by TEM can be classified into two groups. The large precipitates are complex compounds that comprise square-shaped TiN precipitate as core with fine Nb-containing precipitate nucleated on pre-existing TiN precipitate as caps on one or more faces at high temperature. In contrast, the fine and spherical Nb carbides and/or carbonitrides precipitate heterogeneously on dislocations and sub-boundaries at low temperature. From the analysis in terms of thermodynamics, EDS and chemical composition of the steel, NbC precipitation is considered to be the predominant precipitation behavior in the tested steel under the processing conditions of this research.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of University of Science and Technology Beijing, Mineral, Metallurgy, Material - Volume 13, Issue 6, December 2006, Pages 523-527
Journal: Journal of University of Science and Technology Beijing, Mineral, Metallurgy, Material - Volume 13, Issue 6, December 2006, Pages 523-527
نویسندگان
Hao Yu, Yi Sun, Qixiang Chen, Haitao Jiang, Lihong Zhang,