2026/7/9現在
ハルヨ ステファヌス
Harjo Stefanus
- 材料強度学、中性子回折、金属組織
researchmap
researchmap
- 興味のある分野（項目変更可能）
- 金属材料の変形挙動と内部組織変化の関係の解明
- 得意な技術（項目変更可能）
- 金属材料の様々な環境下でのin situ・オペランド中性子回折測定
- こんな協力者探しています（項目変更可能）
- 低温での微細粒金属や水素チャージ金属の変形を対象としたオペランド中性子測定に関心のある研究者
- こんなことに協力できます（項目変更可能）
- 金属材料の様々な環境下でのin situ・オペランド中性子回折測定
- 研究PRダイジェスト（項目変更可能）
- J-PARCの中性子回折ビームライン（BL19「匠」、TAKUMI）を駆使し、主に中性子回折を用いた材料挙動のその場（in situ）解析に取り組んでいます。特に、構造材料の変形、残留応力、相変態などを、低温から高温、さらには外部負荷や水素チャージ下といった多様な環境条件下で詳細に調査し、中性子による応力評価や変形機構の解明を進めています。
研究PRをもっと見たい方はこちら
工学材料回折装置「匠」（J-PARC MLF BL19）（TAKUMI）プレスリリース
論文（被引用数順にランキング表示、☆は研究者注目の論文）
- Cooperative deformation in high-entropy alloys at ultralow temperatures
Science Advances (Internet), 6(13), p.eaax4002_1 - eaax4002_8, 2020/03 - Effect of prior martensite on bainite transformation in nanobainite steel
Acta Materialia, 85, p.243 - 249, 2015/2 - Si-addition contributes to overcoming the strength-ductility trade-off in high-entropy alloys
International Journal of Plasticity, 159, p.103443_1 - 103443_18, 2022/12 - Martensite phase stress and the strengthening mechanism in TRIP steel by neutron diffraction
Scientific Reports (Internet), 7, p.15149_1 - 15149_11, 2017/11 - Metalloid substitution elevates simultaneously the strength and ductility of face-centered-cubic high-entropy alloys
Acta Materialia, 225, p.117571_1 - 117571_16, 2022/02
- Unveiling the effects of Mn, Cr, Al, and Si on the low-temperature tempering behaviors of high-carbon martensite
Journal of Materials Science \& Technology, 275, p.250 - 259, 2026/12 - Evaluation of residual stress distribution in linear friction welded steel joint $via$ neutron diffraction mapping measurement
ISIJ International, 66(5), p.673 - 684, 2026/04 - Stress and temperature, rather than hydrogen, govern stacking fault evolution during tensile deformation in Fe-24Cr-19Ni steel
Scripta Materialia, 273, p.117084_1 - 117084_6, 2026/03 - Strengthening mechanism in ferrite and austenite of friction stir welded duplex stainless steel; {\it In situ} neutron diffraction study
ISIJ International, 66(4), p.477 - 488, 2026/03 - Super-ductile magnesium alloy at room temperature
Acta Materialia, 305, p.121884_1 - 121884_10, 2026/02 - Effect of nanoscale cellular structure on the mechanical properties of Inconel 718 with unique hierarchical structure fabricated by laser powder bed fusion
Acta Materialia, 303, p.121696_1 - 121696_18, 2026/01 - Low-temperature deformation mechanism in a work-hardenable body-centered cubic high-entropy alloy with a large uniform elongation
Acta Materialia, 303, p.121734_1 - 121734_10, 2026/01 - Integrated neutron and surface-based characterization of stress/strain fields and microstructural evolution during fatigue crack growth in SUS304 stainless steel
Materials Science \& Engineering A, 951, p.149607_1 - 149607_16, 2026/01 - Current status of engineering materials diffractometer at J-PARC
Materials Science Forum, 681 2011/3 - Work hardening, dislocation structure, and load partitioning in lath-martensite determined by {\it in situ} neutron diffraction line profile analysis
Metallurgical and Materials Transactions A, 48(9), p.4080 - 4092, 2017/09