胡映,丁文红,明亚飞,吴梦先,雷小玲,李天妹

• 1:武汉科技大学耐火材料与冶金国家重点实验室
• 2:武汉一冶钢结构有限责任公司研发中心

摘要(Abstract)：

采用控轧控冷(TMCP)工艺制备了N08825镍基合金/X70(碳含量为0.16%)复合板和N08825镍基合金/700L(碳含量为0.069%)复合板,并对复合板进行了900～1200℃的固溶处理,利用光学显微镜(OM)和扫描电镜(SEM)研究了不同温度固溶处理后复合板界面碳化物形貌和分布、耐蚀性和冲击韧性。结果表明:碳含量降低后,复合板界面的碳化物减少,低温固溶时碳化物充分溶解,复合板已具有较好的耐蚀性和冲击韧性。镍基合金/X70复合板固溶后碳化物腐蚀坑较大,1200℃固溶时腐蚀速率达到最低值,为1.12 mm/a,平均冲击吸收能量降至16.20 J。镍基合金/700L复合板的冲击韧性、耐蚀性均优于镍基合金/X70复合板。镍基合金/700L复合板在1000℃以下固溶时,冲击吸收能量均高于33.00 J,在1000℃以上固溶后,平均腐蚀速率均低于1.00 mm/a, 1200℃固溶时,平均冲击吸收能量为26.90 J。故采用低碳基材及低温固溶处理能有效防止复合板的冲击韧性剧烈下降并保证良好的耐蚀性。

关键词(KeyWords)： 镍基复合板;碳含量;冲击韧性;固溶温度;耐蚀性

Abstract:

Keywords:

基金项目(Foundation): 湖北省技术创新专项重大项目(2018AA005)

作者(Author): 胡映,丁文红,明亚飞,吴梦先,雷小玲,李天妹

DOI: 10.13289/j.issn.1009-6264.2021-0289

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