The low-temperature aging embrittlement and crystallography of secondary precipitates with matrix in a 2205 duplex stainless steel
|Keywords:||方位關係;雙相不;離相分解;差排;duplex stainless steel;orientation relationship;spinodal decomposition;dislocation||Issue Date:||2004||Abstract:||
Duplex stainless steels have been widely used in the oil, chemical and nuclear industries due to their high strength, good weldability, and high resistance to stress corrosion and pitting. The superior properties of these duplex stainless steels come primarily from approximately equivalent amounts of austenite (γ) and δ-ferrite. However, these types of steels are intrinsically subject to embrittlement when exposed to temperatures above 300 ℃ because of solid-state reactions within the ferrite phase. It is well known that in Fe-Cr alloys there is a miscibility gap, where the ferrite phase may decompose into an iron-rich b.c.c. phase (
|Appears in Collections:||材料科學與工程學系|
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