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Zhang Cheng,Pan Jie,Wang Zixie,Wu Zhaoyu,Mei Qiliang,Ding Qianxue,Gao Jing,Xiao Xueshan 한국원자력학회 2023 Nuclear Engineering and Technology Vol.55 No.5
The new Modified-690Gd alloy, namely as Nie30Cr-(10-x) Fe-xGd (x ¼ 0.5, 1.0, 1.5,2.0, 3.0 wt%) for function structure integrated thermal neutron shielding has been prepared and characterized. The Modified-690Gd alloy was mainly composed of g austenite matrix and (Ni, Cr, Fe)5Gd precipitated along grain boundaries. The new Modified-690Gd alloy had great mechanical properties, which had the tensile strength exceeding 620 MPa and the elongation being above 50%. Meanwhile, this alloy had excellent weldability and good corrosion resistance in boric acid. The new Modified-690Gd alloy is expected to be a kind of high efficiency thermal neutron shielding materials