Effect of alloying element on mechanical and oxidation properties of Ni-Cr-Mo-Co alloys at 950 °C
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- 作者：Dong-Jin Kim ; djink@kaeri.re.kr" class="auth_mail" title="E-mail the corresponding author ; Su Jin Jung ; Byung Hak Mun ; Sung Woo Kim ; Yun Soo Lim ; Woo Gon Kim ; Seong Sik Hwang ; Hong Pyo Kim
- 关键词：B. Materials Engineering
- 刊名：Nuclear Engineering and Design
- 出版年：2016
- 出版时间：1 December 2016
- 年：2016
- 卷：309
- 期：Complete
- 页码：254-264
- 全文大小：5914 K
文摘
The very-high-temperature reactor (VHTR) is a promising Generation-IV reactor design given its clear advantage regarding the production of massive amounts of hydrogen and in generating highly efficient electricity despite the fact that a material challenge remains at a high temperature of around 950 °C, where hydrogen production is possible under high pressure. In particular, among the many components composing a VHTR, the temperature of the intermediate heat exchanger (IHX) is expected to be the highest, with a coolant environment of up to 950 °C. Therefore, this work focuses on the mechanical and oxidation properties at 950 °C as a function of the alloying elements of Cr, Co, Mo, Al, and Ti constituting nickel-based alloys fabricated in a laboratory. The tensile, creep, and oxidation properties of the alloying elements were analyzed with SEM, TEM-EDS, and by assessing the weight change.