|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Energy Materials 2017: Materials for Coal-Based Power
||Development of Wrought Ni-Cr-Al Alloy with High Temperature Corrosion Resistance
||Yoshihiko Koyanagi, Hiroyuki Takabayashi, Shigeki Ueta
|On-Site Speaker (Planned)
Further high temperature corrosion resistance for sulfidation corrosion, vanadium attack and so on is required to materials for boiler applications. Generally, high Cr containing Fe based or Ni based alloys are used in severe corrosion environment. However, the Ni-based alloys containing high Cr content degrade the manufacturability in large scale product because alpha Cr precipitates during hot-working. The manufacturing process of developed DSA760 has been established in large scale production. DSA760 has good high temperature strength due to the Ni3Al gamma prime phase and cellular alpha Cr precipitation, and excellent sulfidation corrosion resistance and vanadium attack resistance compared with conventional wrought Ni-based alloys, such as Alloy718, Alloy625 and Alloy80A.
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