Microstructure evolution of a Ni–Cr–W superalloy during long-term aging at high temperatures

Volume: 106, Pages: 283 - 291
Published: Aug 1, 2015
Abstract
The effects of long-term exposure to high temperature (800 and 900 °C for up to 20,000 h) on the microstructure evolution of a Ni–Cr–W superalloy (Alloy 230) were investigated. After long-term aging at 800 °C, extensive precipitation of the secondary Cr-rich M23C6 carbides was observed. In addition, the internal dissociation of W-rich primary η-M6C carbides was observed, such as, W-rich M6C → α-W, Cr-rich M23C6, and W-depleted Ni-base matrix....
Paper Details
Title
Microstructure evolution of a Ni–Cr–W superalloy during long-term aging at high temperatures
Published Date
Aug 1, 2015
Volume
106
Pages
283 - 291
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