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Elevated temperature nanoscratch of Inconel 617 Superalloy

Journal Article · · Mechanics Research Communications
 [1];  [2];  [3];  [2]
  1. George Mason Univ., Fairfax, VA (United States); OSTI
  2. Texas A & M Univ., College Station, TX (United States)
  3. George Mason Univ., Fairfax, VA (United States)
Inconel 617 superalloy is a main candidate to be used for mechanical and tribo-components in high temperature helium-cooled reactors. Recent findings show that it grows a unique surface oxide, especially under high temperature helium with distinct wear, friction, and contact properties. Here, this study reports the elevated temperature nanoscratch behavior of Inconel 617 and further utilizes it to understand the effect of temperature on contact friction constituent contributors, adhesion and plowing at small scales. Inconel 617 is aged in high temperature helium, and consequently, the total kinetic friction coefficient of the alloy surface oxide is obtained in temperatures ranging from 25 °C to 400 °C. A finite element model is developed and validated based on the experimental results. The model is then utilized along with previously established techniques to determine the adhesion and plowing components of the friction coefficient. At small scale, the experimental results show that with increasing temperature the friction coefficient increases. It was inferred that this increase is mainly due to the increased contribution of plowing friction at high levels of deformation.
Research Organization:
Texas A & M Univ., College Station, TX (United States). Texas A & M Engineering Experiment Station
Sponsoring Organization:
USDOE; USDOE Office of Nuclear Energy (NE)
Grant/Contract Number:
NE0008549
OSTI ID:
1977431
Alternate ID(s):
OSTI ID: 1872128
Journal Information:
Mechanics Research Communications, Journal Name: Mechanics Research Communications Vol. 121; ISSN 0093-6413
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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