Ti和/或Nb对高温合金25Cr37Ni0.6Nb组织和力学性能的影响

特殊钢 ›› 2014, Vol. 35 ›› Issue (2): 47-50.

Ti和/或Nb对高温合金25Cr37Ni0.6Nb组织和力学性能的影响

陈道凤¹，郑宏光²，马天军²，单爱党¹

1. 上海交通大学材料科学与工程学院，上海200240；
2. 宝山钢铁股份有限公司研究院，上海201900；

收稿日期:2013-09-17 出版日期:2014-04-01 发布日期:2022-09-14
作者简介:陈道凤(1989-)，女，硕士研究生(上海交通大学)，2011年华中科技大学(本科)毕业，金属材料研究。

Effect of Ti and/or Nb on Structure and Mechanical Properties of High Temperature Alloy 25Cr37Ni0.6Nb

Chen Daofeng¹ , Zheng Hongguang² , Ma Tianjun² , Shan Aidang¹

1. School of Material Science and Engineering, Shanghai Jiaotong University, Shanghai 200240 ；
2. Research Institute, Baoshan Iron and Steel Co Ltd, Shanghai 201900 ;

Received:2013-09-17 Published:2014-04-01 Online:2022-09-14

摘要/Abstract

摘要： 研究了150 kg真空感应炉冶炼并轧成30 mm板的0.05C-25Cr-37Ni-0.6Nb(0.6Nb),0.05C-25Cr-37Ni-0.6Nb-0.6Ti(0.6Nb-0.6Ti)和0.05C-25Cr-37Ni-1.8Nb(1.8Nb)3组合金1160~1220℃ 1 h空冷固溶处理的组织和性能。结果表明,与0.6Nb合金相比加Ti的(0.6Nb-0.6Ti)合金的晶粒明显粗化,析出相主要为微米级Ti(CN),室温强度降低,760℃蠕变性能降低;增加Nb含量的1.8Nb合金的晶粒细化,析出相主要为纳米级Nb(CN),室温强度和蠕变性能没有明显变化。

关键词: 25Cr37Ni0.6Nb高温合金, Ti, Nb, 固溶处理, 析出相, 晶粒粗化

Abstract: The structure and properties of three alloys 0.05C-25Cr-37Ni-0.6Nb(0.6Nb), 0.05C-25Cr-37Ni-0.6Nb-0.6Ti(0.6Nb-0.6Ti) and 0.05C-25Cr-37Ni-l.8Nb( 1.8Nb) melted by 150 kg vacuum induction furnace, rolled to 30 mm plate and solid-solution-treated at 1160-1220 ℃ for 1 h, air cooling have been studied. Results show that as compared with 0.6Nb alloy, the grains in 0.6Nb-0.6Ti alloy added Ti obviously coarsen, the main precipitates are micrometer-scale Ti( CN), the ambient strength and creep behavior at 760 ℃ of 0.6Nb-0.6Ti alloy decrease ； the 1.8Nb alloy got a raise in Nb content the grains fine, the main precipitates are nanometer-scale Nb(CN) , the ambient strength and creep behavior are not obviously changes.

Key words: High Temperature Alloy 25Cr37Ni0.6Nb, Ti, Nb, Solid-Solution Treatment, Precipitates, Grain Coarsening

陈道凤, 郑宏光, 马天军, 单爱党. Ti和/或Nb对高温合金25Cr37Ni0.6Nb组织和力学性能的影响[J]. 特殊钢, 2014, 35(2): 47-50.

Chen Daofeng , Zheng Hongguang , Ma Tianjun , Shan Aidang. Effect of Ti and/or Nb on Structure and Mechanical Properties of High Temperature Alloy 25Cr37Ni0.6Nb[J]. Special Steel, 2014, 35(2): 47-50.

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