Mikyle Paul , Reza Ghiaasiaan , Paul Gradl , Jeremy Caron , Ping Wang , Shuai Shao , Nima Shamsaei
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引用次数: 0
Abstract
The tensile and fatigue properties of a newly developed Ni-based superalloy, HAYNES® 233, were investigated. Two different manufacturing processes including hot rolling (wrought plate) and laser-powder directed energy deposition (LP-DED) were considered. In addition, specimens were tested in two heat treatment (HT) conditions, namely solution annealed (SA), and age-hardened (AH). The microstructures of the materials were characterized using a scanning electron microscope. Tensile properties of specimens were evaluated at 21 °C, 538 °C, and 871 °C along with the fatigue properties at 21 °C under two different strain amplitudes of εa = 0.005 mm/mm and εa = 0.002 mm/mm. The LP-DED material in both the SA and AH conditions showed similar tensile strengths to the wrought AH material at all test temperatures, whereas the wrought SA material showed a noticeable deficit in strength at 21 °C and 538 °C, and was only comparable at 871 °C. Fatigue results indicated that there was no significant difference in fatigue life for specimens tested at εa = 0.005 mm/mm, while differences in fatigue life were observed for specimens tested at εa = 0.002 mm/mm, where fatigue life was observed to correlate well with the size of the crystallographic facets at crack initiation sites.
期刊介绍:
Materials and Design is a multi-disciplinary journal that publishes original research reports, review articles, and express communications. The journal focuses on studying the structure and properties of inorganic and organic materials, advancements in synthesis, processing, characterization, and testing, the design of materials and engineering systems, and their applications in technology. It aims to bring together various aspects of materials science, engineering, physics, and chemistry.
The journal explores themes ranging from materials to design and aims to reveal the connections between natural and artificial materials, as well as experiment and modeling. Manuscripts submitted to Materials and Design should contain elements of discovery and surprise, as they often contribute new insights into the architecture and function of matter.