V含量对不锈钢TDVS2001组织性能的影响
Effect of vanadium content on microstructure and properties of stainless steel TDVS2001
裴明德 1李国平 1秦宇航 1张峰 1范新智 1郭宏钢1
作者信息
- 1. 太原钢铁(集团)有限公司先进不锈钢材料国家重点实验室,山西太原 030003
- 折叠
摘要
研究了 V含量对双相不锈钢TDVS2001组织及性能的影响.利用金相显微镜、SEM、EDS和TEM对析出相及组织进行了表征.结果表明,当V含量在0.11％以下时,显微组织中无钒的析出物,力学性能略有提升,但变化不大;当V含量为0.27％时,铁素体相中析出大量纳米级的钒化物,材料屈服强度提高了 68 MPa,冲击吸收能量无明显变化,透射电镜分析钒化物为VN.晶粒尺寸、纳米级VN析出相是其强度升高的主要原因.
Abstract
Effect of vanadium content on the microstructure and properties of duplex stainless steel TDVS2001 was investigated.The precipitates and microstructure were characterized by metallographic microscope,SEM,EDS and TEM.The results indicate that when the vanadium content is less than 0.11％,there is no vanadium precipitate in the metallographic structure and the mechanical properties are slightly improved.When the vanadium content is 0.27％,a large number of nano-scaled vanadium precipitates occur in the ferrite phase,the yield strength of the material increases by 68 MPa,while the impact absorbed energy has no obvious change.The vanadate is confirmed to be VN precipitation by transmission electron microscope.The smaller grain size and nano-scaled VN precipitation are the main reasons for the improvement of strength.
关键词
TDVS2001不锈钢/强度/VN析出相/铁素体相/冲击吸收能量Key words
TDVS2001 stainless steel/strength/VN precipitate/ferrite phase/impact absorbed energy引用本文复制引用
基金项目
山西省重点研发计划(2022ZDYF036)
出版年
2024
NETL
NSTL
万方数据