Effect of annealing temperature on transformation induced plasticity effect of a lean duplex stainless steel
Effect of annealing temperature on transformation induced plasticity effect of a lean duplex stainless steel
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DOI：
10.1016/j.matchar.2013.02.003
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发表时间：
2013-05
影响因子：
4.7
通讯作者：
Wei Zhang;Jincheng Hu
中科院分区：
文献类型：
--
作者：
Wei Zhang;Jincheng Hu
Effects of annealing temperature on the mechanical property and martensite transformation of a new lean duplex stainless steel have been investigated. It was found that the elongation increased with the annealing temperatures and reached the maximum of 61.2% after annealing at 1150°C. A sequential γ→ε→α' martensite transformation was generated during tensile and brought the transformation induced plasticity effect. More than 30% α′ martensite was induced after tensile in the specimens annealed at 800~1000°C, whereas only 8.8% α′ was induced at 1150°C. The Md(30/50)temperatures of austenite phase reduced from 97°C to 46°C with the annealing temperatures varying from 800°C to 1150°C. Therefore the austenite phase became more stable and transformed to ε and α′ martensite phase gradually in a wide region and thus caused better plasticity. This also indicated that γ→ε transformation was important for transformation induced plasticity effect.
