Abstract： Laser position statistic distribution analysis（Laser-OPA） technique was used to characterize the component distribution of small non-planar surface samples (welded pipe arc surface, the impact sample of ship plate steel thick slab and directional solidification of nickel-based superalloy turbine blades). Two-dimensional projection content contour map and three-dimensional morphology content contour map were firstly proposed to characterize the distribution condition of various chemical elements on non-planar surface. The frequency-content distribution of elements on welded pipe arc surface is in good agreement with the results of maximum segregation. As for the impact sample of ship plate steel thick slab, the distribution results obtained by spark original position statistic distribution analysis (Spark-OPA), laser-induced breakdown spectroscopy-original position statistic distribution analysis (LIBS-OPA) and laser ablation-inductively coupled plasma mass spectrometry-original position statistic distribution analysis (LA-ICP-MS-OPA) were consistent with one another. The LA-ICP-MS-OPA result of superalloy turbine blades indicated the low melting point elements were easily precipitated on polycrsytal band and the directional solidification technique can effectively improve the precipitation phenomenon.
赵雷,贾云海,袁良经,陈玉红,屈华阳,张勇,李冬玲,王海舟. 材料非平面部位组成与状态的原位统计分布分析表征技术[J]. 冶金分析, 2013, 33(4): 1-12.
ZHAO Lei,JIA Yun-hai,YUAN Liang-jing,CHEN Yu-hong,QU Hua-yang,ZHANG Yong,LI Dong-ling,WANG Hai-zhou. Original position statistic distribution analysis characterization technique for composition and state on non-planar surface of materials. , 2013, 33(4): 1-12.
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