Journal Article10.4028/WWW.SCIENTIFIC.NET/KEM.345-346.1311
A Nondestructive Study Using Lattice Plane Specific Analysis on a Nano-Precipitate Strengthened Alloy
E. Wen Huang,Yandong Wang,Bjørn Clausen,Michael L. Benson,Hahn Choo,Peter K. Liaw,Lee M. Pike +6 more
TL;DR: The HASTELLOY C-22HS alloy is a corrosion-resistant nickel-based alloy in a faced-center-cubic (FCC) crystal structure and the peak width of the hkl plane from both the nano-precipitates and the matrix were determined as a function of the applied stress.
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Abstract: The HASTELLOY C-22HS alloy is a corrosion-resistant nickel-based alloy in a faced-center-cubic (FCC) crystal structure. The aging process produces the nano-precipitates in the matrix and the yield strength of the aged alloy is doubled at both room temperature and 595C. In the present study, the tensile behavior of the alloy was examined by in-situ neutron-diffraction at room temperature. The peak-width of the hkl plane from both the nano-precipitates and the matrix were determined as a function of the applied stress. The evolution of the peak widths from the matrix and the precipitates during the monotonic-tension-loading experiments clearly demonstrated that the effect of the nano-precipitate strengthening mechanism was active. It reflects clearly the importance of the nondestructive in-situ neutron experiments examining the diffraction profile evolutions coupled with the mechanical measurements.
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