Designing a high Si reduced activation ferritic/martensitic steel for nuclear power generation by using Calphad method
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2019年第3期
论文作者：Chao Liu Quanqiang Shi Wei Yan Chunguang Shen Ke Yang Yiyin Shan Mingchun Zhao
文章页码：266 - 274
摘 要：A high Si reduced activation ferritic/martensitic（RAFM） steel for nuclear structure application is successfully designed by using Calphad method. The main designed chemical composition is C 0.18–0.22%, Cr10.0–10.5%, W 1.0–1.5%, Si 1.0–1.3%, V+Ta 0.30–0.45%, and Fe in balance. High Si design brings excellent corrosion resistance, while low activation is advantageous in the nuclear waste processing. The experimental results indicate that the newly designed high Si RAFM steel had full martensitic structure and uniformly distributed fine second phase particles, and exhibited excellent mechanical properties and corrosion resistance. Compared to the P91 steel, this new RAFM steel designed by Calphad method is expected to be a promising candidate used in nuclear power generation, which also provides a new and effective approach to the development of RAFM steel for nuclear application.
Chao Liu1,2，Quanqiang Shi1，Wei Yan3，Chunguang Shen3，Ke Yang1，Yiyin Shan1，Mingchun Zhao2
1. Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences2. School of Material Science and Engineering, Central South University3. The State Key Laboratory of Rolling and Automation, Northeastern University
摘 要：A high Si reduced activation ferritic/martensitic（RAFM） steel for nuclear structure application is successfully designed by using Calphad method. The main designed chemical composition is C 0.18–0.22%, Cr10.0–10.5%, W 1.0–1.5%, Si 1.0–1.3%, V+Ta 0.30–0.45%, and Fe in balance. High Si design brings excellent corrosion resistance, while low activation is advantageous in the nuclear waste processing. The experimental results indicate that the newly designed high Si RAFM steel had full martensitic structure and uniformly distributed fine second phase particles, and exhibited excellent mechanical properties and corrosion resistance. Compared to the P91 steel, this new RAFM steel designed by Calphad method is expected to be a promising candidate used in nuclear power generation, which also provides a new and effective approach to the development of RAFM steel for nuclear application.
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