| 合金元素对Ni基高温合金1223K氧化行为的影响 |
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| 引用本文： | 黄炎,王磊,刘杨,赵卓,吴剑涛,燕平.合金元素对Ni基高温合金1223K氧化行为的影响[J].材料热处理学报,2011,32(12). |
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| 作者姓名： | 黄炎 王磊 刘杨 赵卓 吴剑涛 燕平 |
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| 作者单位： | 1. 东北大学材料各向异性与织构工程教育部重点实验室,辽宁沈阳,110819
2. 钢铁研究总院高温材料研究所,北京,100081 |
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| 基金项目： | 国家重点基础研究发展计划项目(2010CB631203); 长江学者创新团队发展计划资助(IRT0713) |
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| 摘 要： | 研究了不同Cr、Ti、Ta含量定向凝固Ni基高温合金的1223 K恒温氧化行为。结果表明：Cr、Ti、Ta对合金的抗氧化性能在氧化的不同阶段作用各异。在氧化初期,由于Ti元素与O的亲和力很强,Ti含量高的No.3合金在氧化曲线上增重较为明显,而随着氧化的进行,Cr含量高的No.1合金增重较大,这是由于Cr的选择性氧化所致。在1223 K,No.1合金中Ti和Ta含量较低无法形成有效弥散分布于Cr2O3之中,难以形成连续的保护性氧化膜,从而不能有效地阻碍Cr3＋向合金内部持续扩散。而No.2和No.3合金中Ti和Ta含量适中,形成连续膜可延缓Cr3＋的持续向外扩散,对改善合金的抗氧化能力有积极作用。
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| 关 键 词： | 金属材料 高温合金 恒温氧化 氧化行为 定向凝固 |
Effects of alloying elements on oxidation behavior of a Ni-base superalloy at 1223 K |
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| HUANG Yan,WANG Lei,LIU Yang,ZHAO Zhuo,WU Jian-tao,YAN Ping.Effects of alloying elements on oxidation behavior of a Ni-base superalloy at 1223 K[J].Transactions of Materials and Heat Treatment,2011,32(12). |
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| Authors: | HUANG Yan WANG Lei LIU Yang ZHAO Zhuo WU Jian-tao YAN Ping |
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| Affiliation: | HUANG Yan1,WANG Lei1,LIU Yang1,ZHAO Zhuo1,WU Jian-tao2,YAN Ping2(1.Key Laboratory for Anisotropy and Texture of Materials,Northeastern University,Shenyang 110819,China,2.Department of High-temperature Materials,Central Iron and Steel Research Institute,Beijing 100081,China) |
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| Abstract: | Isothermal oxidation behavior of Ni-base superalloys with different Cr,Ti and Ta content at 1223 K was investigated.The results show that the different elements play a different role at different oxidation steps for oxidation resistance.In prime oxidation,the oxidation mass gain of alloy No.3 with high Ti content increases obviously due to the strong affinity between Ti and O.Following with the continuous oxidation,the mass gain of alloy No.1 with high Cr content is accelerated because of the selective oxid... |
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| Keywords: | metallic materials superalloy isothermal oxidation oxidation behavior directional solidification |
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