2025/11/27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
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) 2020/3 - Effect of prior martensite on bainite transformation in nanobainite steel
Acta Materialia, 85 2015/2 - Martensite phase stress and the strengthening mechanism in TRIP steel by neutron diffraction
Scientific Reports (Internet), 7(1) 2017/11 - Si-addition contributes to overcoming the strength-ductility trade-off in high-entropy alloys
International Journal of Plasticity, 159 2022/12 - Stacking fault energy analyses of additively manufactured stainless steel 316L and CrCoNi medium entropy alloy using in situ neutron diffraction
Scientific Reports (Internet), 10(1) 2020/1
- 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 In Situ Neutron Diffraction Line Profile Analysis
Metallurgical and Materials Transactions A, 48(9), p.4080 - 4092, 2017/9 - Neutron diffraction-assisted constitutive modeling of directed energy deposited CoCrFeMnNi high entropy alloy
Materials Science & Engineering A, 942, p.148712_1 - 148712_11, 2025/10 - Enhanced work hardening in ferrite and austenite of duplex stainless steel at 200 K;it In situ neutron diffraction study
Materials Science and Engineering A, 941, p.148602_1 - 148602_11, 2025/09 - Microstructural evolution and mechanical instability of Mar-M509 superalloy fabricated by laser powder bed fusion under short-term thermal exposure
Materials Science and Engineering A, 940, p.148534_1 - 148534_16, 2025/09 - Lii ders band-assisted high uniform ductility in ultrastrong ferrous medium-entropy alloy via hierarchical microstructure
International Journal of Plasticity, 190, p.104378_1 - 104378_18, 2025/07 - Temperature-dependent deformation behavior of dual-phase medium-entropy alloy; In-situ neutron diffraction study
Journal of Materials Science & Technology, 223, p.308- - 324, 2025/07 - Enhancing the strength and ductility of a medium entropy alloy through non-basal slip activation
Nature Communications (Internet), 16, p.6480_1 - 6480_13, 2025/07 - Unique deformation behavior of ultrafine-grained 304 stainless steel at 20 K
Scripta Materialia, 264, p.116726_1 - 116726_6, 2025/07 - Grain refinement of dual phase steel maximizes deformation ability of martensite, leading to simultaneous enhancement of strength and ductility
Acta Materialia, 292, p.121061_1 - 121061_13, 2025/06 - Influence of temperature on mechanical behavior and plasticity mechanism of a precipitation-strengthened medium-entropy alloy
Science China; Technological Sciences, 68(6), p.1620201_1 - 1620201_10, 2025/06 - Experimental investigation of phase transformations in steel using X-ray and neutron diffraction
Metals, 15(6), p.610_1 - 610_19, 2025/05 - On the role of austenite stability in yielding behavior of a medium Mn steel with a duplex austenite-martensite microstructure
Acta Materialia, 288, p.120840_1 - 120840_14, 2025/04 - Role of solute hydrogen on mechanical property enhancement in Fe-24Cr-19Ni austenitic steel; Anit In situ neutron diffraction study
Acta Materialia, 287, p.120767_1 - 120767_16, 2025/04 - Enhanced strength and ductility in an additively manufactured Al10SiMg alloy at cryogenic temperatures
Communications Materials (Internet), 6, p.65_1 - 65_13, 2025/04 - In situ neutron diffraction study of strain evolution and load partitioning during elevated temperature tensile test in HIP-Treated electron beam powder bed fusion manufactured Ti-6Al-4V
JOM, 77(4), p.1803 - 1815, 2025/04 - Structural behaviors of lead zirconate titanate-based ferroelectric ceramics during pyroelectric-power generation cycles
Journal of Applied Physics, 137(9), p.094101_1 - 094101_7, 2025/03 - Unusual low-temperature ductility increase mediated by dislocations alone
Materials Science & Engineering A, 924, p.147819_1 - 147819_10, 2025/02 - A Lightweight shape-memory alloy with superior temperature-fluctuation resistance
Nature, 638, p.965 - 971, 2025/02