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New Materials Research Findings from Banaras Hindu University Reported (Effect of surface nanostructure on tensile behavior of superalloy IN718)

September 9, 2014

By a News Reporter-Staff News Editor at Journal of Technology -- Current study results on Materials Research have been published. According to news reporting originating from Varanasi, India, by VerticalNews correspondents, research stated, "Peak aged nickel based superalloy Inconel 718 was subjected to ultrasonic shot peening for different durations of 45, 60 and 90 min. The transverse and longitudinal sections of the ultrasonic shot peened (USSP) specimens were examined by scanning electron microscope (SEM) and transmission electron microscope (TEM) and the shot peened microstructures were characterized."

Our news editors obtained a quote from the research from Banaras Hindu University, "A nanostructure of nearly 12 nm grain size was observed to develop in surface region of the USSP specimen. X-ray diffraction (XRD) of the USSP samples did not reveal any phase change. Microhardness of the shot peened region was increased by 20% in the as shot peened condition and it was reduced to 8% in the stress relieved condition. Yield and tensile strengths were found to increase only marginally by 3.5% and 2.15%, respectively and the ductility was reduced by 3.4% following ultrasonic shot peening."

According to the news editors, the research concluded: "The results are discussed in terms of grain refinement in the shot peened region."

For more information on this research see: Effect of surface nanostructure on tensile behavior of superalloy IN718. Materials & Design, 2014;62():76-82. Materials & Design can be contacted at: Elsevier Sci Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier -; Materials & Design -

The news editors report that additional information may be obtained by contacting S. Kumar, Banaras Hindu Univ, Indian Inst Technol, Dept. of Met Engn, Varanasi 221005, UP, India. Additional authors for this research include G.S. Rao, K. Chattopadhyay, G.S. Mahobia, N.C.S. Srinivas and V. Singh.

Keywords for this news article include: Varanasi, India, Asia, Materials Research

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Source: Journal of Technology

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