Original position quantitative statistic distribution characterization of composition in triple melting GH4169 alloy ingot based on microbeam X-ray fluorescence spectrometry
CAI Wenyi1, TANG Chao2, DU Jinhui2, WANG Peng3*, LI Dongling3,4, WANG Haizhou3,4
1. Central Iron & Steel Research Institute, Beijing 100081,China; 2. Beijing CISRI-GAONA Materials and Technology Co., Ltd., Beijing 100081,China; 3. NCS Testing Technology Co., Ltd., Beijing 100081, China; 4. Beijing Key Laboratory of Metallic Materials Characterization, Beijing 100081, China
Abstract：GH4169 alloy is prepared by vacuum induction melting(VIM)-protective electroslag remelting (PESR)-vacuum arc remelting(VAR) triple melting process. Since the alloying degree is relatively high and the size of alloy ingot is large, the constituent difference caused by element segregation and uneven distribution will have harmful influence on the mechanical property and physical property of alloy. The microbeam X-ray fluorescence spectrometry (μ-XRF) has many advantages such as high micro-area resolution, rapid analysis speed, simultaneous determination of multi-elements and nondestructive test. The measuring conditions and instrumental quantitative method were optimized. The determination method of eight major elements (Al, Ti, Cr, Fe, Co, Ni, Nb and Mo) in GH4169 alloy ingot by μ-XRF was established. The distribution trend of elemental content and maximum segregation degree from ingot edge to center was studied. The statistical analysis of maximum segregation degree, statistical segregation degree and statistical coincidence degree of elements was conducted. The distribution law of elemental content in GH4169 alloy ingot was obtained: the content of Ti, Co, Nb and Mo in center of ingot was high, while the content in edge was low; the content of Al, Cr, Fe and Ni in edge of ingot was high, while the content in center was low.
蔡文毅, 唐超, 杜金辉, 王蓬, 李冬玲, 王海舟. 基于微束X射线荧光光谱的三联冶炼GH4169合金铸锭成分原位定量统计分布表征[J]. 冶金分析, 2021, 41(10): 1-11.
CAI Wenyi, TANG Chao, DU Jinhui, WANG Peng, LI Dongling, WANG Haizhou. Original position quantitative statistic distribution characterization of composition in triple melting GH4169 alloy ingot based on microbeam X-ray fluorescence spectrometry. , 2021, 41(10): 1-11.
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