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体视学可以由实际材料样品的金相实验观测获知材料三维组织的定量表征信息,计算材料学则可以通过CALPHAD方法计算预测材料在不同温度下平衡相的种类与数量。以一种超临界水冷堆(SCWR)燃料包壳管用候选材料高Cr低活性铁素体/马氏体钢(实测化学成分为0.097C-11.36Cr-2.73W-0.46Mn-0.13Si-0.047V-0.041N-0.05Ta,mass%)为研究实例,本文综合运用体视学与计算材料学,实现了SCWR用钢相组成的定量实验观测与系统性计算预报的相互验证,以及CWR用钢相组成的综合研究。通过正确理解其基本原理及其适用性,此类综合研究方法亦可望推广应用到其他材料的相组成和显微组织的定量研究。
Stereology The quantitative information of the three-dimensional structure of the material can be obtained from the metallographic experiment of the actual material sample. Calculating the material type, the CALPHAD method can be used to calculate the type and amount of the equilibrium phase of the material under different temperatures. In a supercritical water-cooled reactor (SCWR) fuel cladding material candidate for the high Cr ferrite low-ferrite / martensitic steel (measured chemical composition of 0.097C-11.36Cr-2.73W-0.46Mn-0.13Si-0.047V -0.041N-0.05Ta, mass%) as a case study. In this paper, the combination of stereology and computational materials science was used to verify the quantitative experimental observations and systematic predictions of the phase composition of SCWR steel. Composition of the comprehensive study. Through the correct understanding of its basic principle and its applicability, such comprehensive research methods are also expected to be applied to other materials phase composition and quantitative analysis of the microstructure.