کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7973083 | 1514624 | 2018 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Developing fuel cladding Fe-25Cr-22Ni stainless steels with high microstructural stabilities via Mo/Nb/Ti/Ta/W alloying
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In order to improve the microstructural stability of high Cr/Ni austenitic stainless steels (ASSs) at high temperatures, the present work investigated the effects of minor-alloying elements (Mo, Nb, Ti, Ta, and W) on the microstructural evolution and mechanical properties of Fe-25Cr-22Ni (wt%) ASS systematically. The designed alloy ingots were hot-rolled, solid-solutioned at 1423â¯K for 0.5â¯h, stabilized at 1173â¯K for 0.5â¯h, and then aged at 973â¯K for different hours. It was found that these minor-alloying elements make different contributions to the microstructural stabilities of alloys. Only a small amount of harmful Ï particles exists after 408â¯h-aging in W/Ta-modified alloys, which indicates W and Ta can improve the microstructural stability effectively. Whereas Ti should be forbidden since it accelerates the phase precipitation of Cr23C6 and Ï remarkably. Excessive Mo can also promote the formation of Ï phase and the transformation of Cr23C6 to Ï during aging. The influences of the precipitated phases on mechanical properties of alloys were then studied. Thermal calculations were also performed to analyze the phase precipitation caused by minor-alloying. The Fe-25Cr-22Ni-0.046C-0.73Mo-0.18Nb-0.34Ta (wt%) exhibits excellent mechanical property due to its higher microstructural stability at 973â¯K, which has great potential for fuel cladding application.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 719, 14 March 2018, Pages 27-42
Journal: Materials Science and Engineering: A - Volume 719, 14 March 2018, Pages 27-42
نویسندگان
D.H. Wen, Q. Wang, B.B. Jiang, C. Zhang, X.N. Li, G.Q. Chen, R. Tang, R.Q. Zhang, C. Dong, P.K. Liaw,