Correlation Between Microstructure and Corrosion Behavior of Two 90Cu10Ni Alloy Tubes
作者： Aili Ma , Shengli Jiang , Yugui Zheng , Zhiming Yao , Wei Ke
DOI: 10.1007/S40195-014-0111-X
关键词:
摘要: Two kinds of 90Cu10Ni tubes with different service lives (more than 3 years and only 1 year, respectively) under identical working conditions were studied by an immersion test in a 3.5 wt% NaCl solution the electron backscattered diffraction (EBSD) technique. The morphology after showed severer corrosion attack at grain boundaries tube shorter life compared longer life. boundary characterization distributions (GBCDs) two obtained EBSD revealed more Σ3 twins, larger random meshes A short modified Livingston’s was conducted to evaluate tendency types boundaries. SEM AFM used characterize morphologies strong correlation between varying depths grooves obtained. influence deviation angle low Σ on resistance also discussed. It is concluded that special “grain engineering” (GBE) treatment has been performed proposed optimized GBCD responsible for better performance tube.
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