摘要
在CoCrFeMnNi高熵合金制备过程中引入氮间隙固溶后进行轧制变形和1150℃1 h回复再结晶处理,研究了氮含量对高熵合金微观组织、力学性能和耐腐蚀性能的影响。结果表明:目前制备工艺条件下,氮均以固溶态存在于CoCrFeMnNi高熵合金中,无第二相析出。随着氮含量增加,合金的硬度提高,耐腐蚀性能提高。当氮含量为0.3wt%时,综合性能最佳,即显微硬度提高了约20.45%,腐蚀电流密度降低了约70.27%,浸泡腐蚀速率降低了约61.54%,浸点蚀坑的密度明显减少。
The effects of nitrogen content on microstructure,mechanical properties and corrosion resistance of CoCrFeMnNi high entropy alloy were studied by rolling deformation and recrystallization at 1150℃for 1 h.The results show that under the present preparation conditions,nitrogen is in interstitial state in CoCrFeMnNi high entropy alloy,without second phase precipitates.With the increase of nitrogen content,the hardness and corrosion resistance of the alloy improve.When the nitrogen content is 0.3wt%,the comprehensive performance is best.The microhardness increases by about 20.45%,the corrosion current density reduces by about 70.27%,the immersion corrosion rate reduces by 61.54%,and the density of the etch pit obviously reduces.
作者
王逸飞
张艳
龚瑞雪
陈德旭
陈景润
李涛
王媛媛
徐豫
张静
WANG Yifei;ZHANG Yan;GONG Ruixue;CHEN Dexu;CHEN Jingrun;LI Tao;WANG Yuanyuan;XU Yu;ZHANG Jing(Metallurgy Engineering,Jiangsu University of Science and Technology,Zhangjiagang 215600,China;Suzhou Institute of Technology,Jiangsu University of Science and Technology,Zhangjiagang 215600,China)
出处
《热加工工艺》
北大核心
2022年第8期35-38,42,共5页
Hot Working Technology
基金
国家自然科学基金资助项目(51201071)。
