汪松林,陆燕玲,张继祥,董安平,周兴泰.喷丸处理对GH3535合金900℃恒温氧化行为的影响[J].稀有金属材料与工程,2020,49(10):3519~3527.[WangSonglin,Lu Yanling,Zhang Jixiang,Dong Anping,Zhou Xingtai.Effect of shot peening on the oxidation behavior of GH3535 alloy at 900 °C[J].Rare Metal Materials and Engineering,2020,49(10):3519~3527.]
喷丸处理对GH3535合金900℃恒温氧化行为的影响
投稿时间:2019-10-22  修订日期:2019-11-22
中文关键词:  喷丸处理  高温氧化  GH3535合金  氧化动力学  氧化膜
基金项目:国家自然科学基金(51674237,51771118,u1760110),中国科学院战略先导专项项目(XDA02004210)
中文摘要:
      采用不连续增重法,对喷丸状态与非喷丸状态GH3535合金900℃恒温氧化行为进行了对比研究。结果表明,900℃下,喷丸强度0.45Nmm样品与未喷丸样品相比,氧化增重降低了79.7%。未喷丸GH3535合金表面氧化产物为NiCr2O4,MoO2,NiMoO4,喷丸状态下氧化膜主要由NiO、NiFe2O4、Cr2O3和NiCr2O4组成。喷丸处理后GH3535合金表面产生塑性变形使晶粒细化,位错密度增加,在合金表层塑性变形区域的位错及晶界充当了Cr原子的快速扩散路径,增加了Cr原子扩散通量,促进Cr向表面扩散形成富Cr氧化物,使得Cr2O3层的更快形成,减少了瞬态氧化期。
Effect of shot peening on the oxidation behavior of GH3535 alloy at 900 °C
英文关键词:Shot peening  High temperature oxidation  GH3535 alloy  Oxidation kinetics  Oxide film
英文摘要:
      The isothermal oxidation behavior of GH3535 alloy before and after shot peening at 900 °C was investigated by using discontinuous increasing weight method. The results show that the samples of Weight gain of the 0.45 Nmm shot peening strength was reduced by 79.7% compared to the unshot sample at 900℃. The main oxide products of unshot GH3535 alloy are NiCr2O4,MoO2,NiMoO4; While the surface oxide film products of GH3535 alloy is composed of NiO, NiFe2O4, Cr2O3 and NiCr2O4 after shot peening treatments. Plastic deformation was performed on the surface of GH3535 alloy and refined the grains due to shot peening The main reason for the increase of Cr atom diffusion flux is that the dislocations and grain boundaries of the plastic deformation zone of the alloy surface act as a fast diffusion path of Cr atoms, and the Cr2O3 layer is more quickly formed, which promotes the diffusion of Cr to the surface to form Cr-rich oxides, and reduce the transient oxidation period
作者单位E-mail
汪松林 重庆交通大学机电与车辆工程学院 wangsonglin@sinap.ac.cn 
陆燕玲 中国科学院上海应用物理研究所材料研究部 luyanling@sinap.ac.cn 
张继祥 重庆交通大学机电与车辆工程学院 jixiangzhang@163.com 
董安平 上海交通大学材料科学与工程学院 apdong@sjtu.edu.cn 
周兴泰 中国科学院上海应用物理研究所材料研究部 zhouxingtai@sinap.ac.cn 
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