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Atomic-to-macroscopic design of invar 36 joints: Entropy stabilization and magnetic compensation via CoCr interfacial alloying
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DOI：10.1016/j.matchar.2026.116849.png)
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Abstract
En 中文
• CoCr co-alloying resolves the strength-expansion trade-off in Invar 36 weldments. • Composite interlayer elevates entropy (0.929 R) to secure a highly stable FCC matrix. • lattice distortion boosts ultimate tensile strength to 436.85 MPa, surpassing the FeNi baseline (387.02 MPa). • Coupled CoCr maximizes work function, expanding the passivation span to 691.12 mV, surpassing the FeNi baseline. • Exact magnetic compensation (57.0 μB) preserves the critical Invar magneto-volume effect.
Keywords:
Invar 36
Laser welding
Microstructure
Corrosion resistance
DFT
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5.5
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1.1W
Citations:
3.4W
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