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| INFLUENCE OF ANNEALING AND SUBSTITUTION ELEMENTS ON DAMPING CAPACITY AND STRENGTH OF Fe-Cr-Al BASED ALLOYS |
| LIN Renrong; LIU Fang; CAO Mingzhou; YANG Rui |
| Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110016 |
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Cite this article:
LIN Renrong; LIU Fang; CAO Mingzhou; YANG Rui. INFLUENCE OF ANNEALING AND SUBSTITUTION ELEMENTS ON DAMPING CAPACITY AND STRENGTH OF Fe-Cr-Al BASED ALLOYS. Acta Metall Sin, 2005, 41(9): 958-962 .
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Abstract The damping capacities and strengths of six alloys, Fe-13Cr-6Al, Fe-11Cr-2 (Mo, Mn or Nb)-6Al, Fe-13Cr-5.5Al-0.5Cu, and Fe-13Cr-5Al-1Cu (atomic fraction, %) were measured. The effects of annealing temperature, cooling
method and substitution elements on the above two properties were discussed by optical microscope observation and internal stresses analysis. The following results were obtained: (1) The damping capacity of Fe-13Cr-6Al based alloys increases with increasing annealing temperature while strength decreases. (2) The damping capacity of
furnace cooling alloys is higher than water quenched alloys while the strength of the former is lower than the latter. (3) The substitution of 0.5\%Cu decreases the interaction between dislocations and solute atoms while increases the elastic interaction between alloying atoms and base atoms, which improves both damping capacity and strength of the alloy.
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Received: 28 March 2005
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