中性子回折測定に基づくRietveld Texture Analysisおよび飽和磁化測定による加工誘起マルテンサイトを含有する鋼の相分率解析精度の相互検証
書誌事項
- タイトル別名
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- Mutual Verification of Phase Fraction Analysis Techniques for Steels Comprising Deformation Induced Martensite Phases: Neutron-Diffraction-Based Rietveld Texture Analysis and Saturation Magnetization Measurement
- チュウセイシ カイセツ ソクテイ ニ モトズク Rietveld Texture Analysis オヨビ ホウワ ジカ ソクテイ ニ ヨル カコウ ユウキ マルテンサイト オ ガンユウ スル ハガネ ノ ソウ ブンリツ カイセキ セイド ノ ソウゴ ケンショウ
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<p>The demand for a reliable and quantitative method to determine phase fractions has been increasing due to the developments of multi-phase materials, such as TRIP steels. The authors conducted a mutual verification between the two methods for phase fraction analysis, the saturation magnetization measurement and the newly developed neutron diffraction technique, neutron-diffraction-based Rietveld texture analysis (NDRTA). The chemical compositions of the current samples were Fe-18Cr-8Ni-1Mn-0.5Si (mass%) with 0, 0.1 or 0.2 mass% of C or N. The α’-martensite volume fractions analyzed by both methods showed a good linear correspondence. The analysis based on the saturation magnetization measurement required an accurate evaluation of the volume saturation magnetization of α’-martensite, which was a function of the chemical composition. The comparison with the result of NDRTA can be an effective method to calibrate the volume saturate magnetization of α’-martensite, especially in the case that a fully transformed standard sample cannot be obtained. NDRTA is also an effective method to determine the fraction of ε-martensite, which is non-magnetic and has a hexagonal close-packed (hcp) structure. Since the hcp phase tends to develop a sharp texture, the conventional X-ray diffraction method without care of texture underestimated its volume fraction. Hence, the simultaneous evaluation of volume fraction and texture by NDRTA is the optimum method to determine the fraction of ε-martensite.</p>
収録刊行物
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- 鉄と鋼
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鉄と鋼 106 (7), 457-464, 2020
一般社団法人 日本鉄鋼協会
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詳細情報 詳細情報について
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- CRID
- 1390003825193961856
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- NII論文ID
- 130007866418
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- NII書誌ID
- AN00151251
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- ISSN
- 18832954
- 00211575
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- NDL書誌ID
- 030548293
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 使用不可