کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7210699 | 1469218 | 2016 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of Ti and Al Interaction on Microstructures and Mechanical Properties of the Nb-Ti-Si-Al Alloys
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مکانیک مواد
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of Ti and Al Interaction on Microstructures and Mechanical Properties of the Nb-Ti-Si-Al Alloys Effect of Ti and Al Interaction on Microstructures and Mechanical Properties of the Nb-Ti-Si-Al Alloys](/preview/png/7210699.png)
چکیده انگلیسی
Nb-Si based alloys show great promise to surpass currently advanced Ni-base superalloys due to their low densities and high melting points. Both Ti and Al are beneficial alloying elements for Nb-Si based alloys. In literatures, a small amount (⤠3 at%) of Al can be frequently examined, while Nb aluminides are usually not formed in this case. Since Nb3Al and Nb2Al have good strength and creep properties, NbAl3 is also a candidate hot-section material; however the study of Nb-Si alloys with these possible Nb aluminides is lacking, so we focus our efforts on whether Nb aluminide is formed or not by adding more Al in the as-cast Nb-Ti-Si alloys. The microstructures and the mechanical properties of two Nb-Ti-Si-Al alloys (A2: Nb-18Ti-14Si-9Al, A4: Nb-21Ti-14Si-9Al) with higher Al content were studied in the present work. A4 alloy was designed to examine the alloying effect of more Ti. Results show that A2 alloy consists of (Nb), Nb5Si3 and Nb3Al, while the A4 alloy is composed of (Nb) and Nb5Si3. The room temperature fracture toughnesses of A2 alloy and A4 alloy are 11.1 and 10.9 MPa·m1/2, respectively. Moreover, the microindention tests were conducted to characterize the micro scale mechanical properties of these Nb-Ti-Si-Al alloys.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Rare Metal Materials and Engineering - Volume 45, Issue 7, July 2016, Pages 1678-1682
Journal: Rare Metal Materials and Engineering - Volume 45, Issue 7, July 2016, Pages 1678-1682
نویسندگان
Sun Zhiping, Guo Jinming, Zhang Chen, Guo Xiping, Tian Xiaodong,