Comprehensive Performance of GH4145/SQ Steel High Temperature Bolt for 300MW Subcritical Units
GH4145/SQ steel,a kind of nickel-based alloy mainly reinforced in the form of solid solution strengthening and γ' phase,is commonly used for high temperature bolt in 300MW subcritical units.This research compares and analyzes between the bolt material and conventional material,after 100,000 hours' operation,in terms of their tensile properties,impact toughness,microscopic structure,precipitated phase change,etc.It has been indicated that after 100,000 hours' operation,the comprehensive performance of GH4145/SQ steel high temperature bolt is still relatively ideal.
GH4145/SQ steelhigh temperature boltnickel-base alloyscomprehensive performance
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