The Benefits of Trace Cu in Wrought Al-Mg Alloys

Aging behavior of Haynes 282 wrought nickel superalloy subjected to a cold pre-deformation by differential speed rolling

The mechanical response of Haynes 282, a wrought gamma prime strengthened nickel based superalloy, is tailored by using both a cold deformation processing and a post straining heat treatment including a two step aging. In this work, the effect of the applied cold pre deformation by conventional equal speed rolling ESR or differential speed rolling DSR methods on the aging behavior of Haynes 282 superalloy, is examined for the first time. For this reason, the solid solution annealed alloy was subjected to 50 pct. nominal cold thickness reduction by either ESR or DSR methods, followed by a two s…

畴壁能决定有序和无序增材制造Fe--49Co--2V的矫顽力

Domain-wall energy governs coercivity in ordered and disordered additively manufactured Fe--49Co--2V

本研究通过校准锻造Fe--49Co--2V的有序参数，证明增材制造合金的额外矫顽力源于保留缺陷而非B2有序化，从而将工艺优化转向构建中的缺陷控制。

揭示增材制造钢中裂纹萌生的潜在机制

Unravelling the mechanisms underlying crack initiation in additively manufactured steel

研究增材制造钢裂纹萌生机制，结合多模态技术观察裂纹尖端塑性三维演变，发现锻造钢与增材制造合金在裂纹尖端塑性表现不同，揭示抗断裂能力受其空间演变控制，为提高损伤容限提供机理框架。

Undercooling growth and magnetic characterization of ferromagnetic shape memory alloy Ni2FeGa single crystals

Ni2FeGa single crystals have been grown in undercooling conditions provided by a glass-purification method. It has been found that trace amounts of gamma phase embededin the single crystalline matrix preferentially orients in the <100> orientation along the growth direction. This gamma phase generates directional residual stress and results in an anisotropic two-way shape memory effect. Large strains of -2.5% in the [001] and 1.5% in the [010] directions have been observed. This trace gamma phase also improves the ductility of the material and thus the crystals could be plastically deformed at…

镁合金低沉淀硬化的起源

Origin of the low precipitation hardening in magnesium alloys

本研究通过EBSD滑移迹线分析和透射电镜实验，揭示镁合金低沉淀硬化源于基面位错易剪切或断裂沉淀相，且高温下变形模式影响交互作用。

室温至600°C下Fe-Cr合金的纳米压痕响应

Nanoindentation responses of Fe-Cr alloys from room temperature to 600 °C

本研究系统探究不同铁基合金纳米力学性能随温度等因素的演化，通过多温区纳米压痕实验结合微观观测，揭示动态应变时效机制及高温下的结构性能关联，为核用结构材料研发提供依据。