Annealing induced recovery of long-term thermal aging embrittlement in a duplex stainless steel
Annealing induced recovery of long-term thermal aging embrittlement in a duplex stainless steel
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DOI：
10.1016/j.msea.2012.11.046
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发表时间：
2013-03-01
期刊：
影响因子：
6.4
通讯作者：
Wang, X. T.
中科院分区：
文献类型：
--
作者：
Li, S. L.;Zhang, H. L.;Wang, X. T.
双相不锈钢（Dss）部件在长期热老化后，性能下降，使用寿命缩短。研究了Z3 CN20 - 09 M钢在400 ℃热时效20，000 h和550 ℃退火1 h后的组织演变和力学性能表征。铁素体的硬化被证明主要与调幅分解有关，与产生的G相略有关系。失稳分解析出相在退火过程中溶解，导致铁素体力学性能的恢复。适当的退火被证明是一个前瞻性的和经济的方法，以延长长期工作的DSS组件的使用寿命。(C)2012爱思唯尔有限公司版权所有。
After long-term thermal aging, duplex stainless steel (Dss) components suffer performance degradation and their service life is shortened. Microstructural evolution and mechanical property characterization of the Z3CN20-09M steel, thermally aged at 400 degrees C for up to 20,000 h and further annealed at 550 degrees C for 1 h were investigated. Hardening in ferrite is demonstrated to be mostly related to spinodal decomposition, and slightly related to G-phases produced. The spinodal decomposition precipitates dissolved during annealing, leading to the recovery of mechanical property of ferrite. Proper annealing is shown to be a prospective and economic approach to extending the service life of long-term working DSS components. (C) 2012 Elsevier B.V. All rights reserved.