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| 1 | 电场处理对GH4199合金组织与变形行为的影响显示文摘将电场处理技术应用于GH4199合金,研究电场对该合金组织和变形行为的影响。结果表明:电场处理使GH4199合金塑性提高,而合金强度无明显变化;在电场强度为2 kV/cm,温度为820℃条件下,GH4199合金经5 h电场处理塑性提高26.6%;合金经电场处理后产生退火孪晶,随处理时间的延长孪晶数量增加;孪晶的出现可以改变变形过程中显微裂纹的扩展方向,增加合金塑性变形功,推迟断裂时间,从而提高合金断裂延伸率;此外,电场处理提高了合金变形均匀性,亦能改善合金塑性。 | 刘杨 王磊 丁扬 崔彤 王延庆 | 2006 | 中国有色金属学报2006，16，10： | 18 |
| 2 | Effects of electric-field treatment on a Ni-base superalloy显示文摘The effects of electric-field treatment on the microstructure and deformation behavior of a nickel-base superalloy were summarized.The results show that the electric-field treatment increases the ductility of the superalloy but has no evident influence on its static strength at both room and elevated temperatures,while,the strength increases but elongation changes weekly with the increasing tensile strain rate.It is found that the direction of microcrack propagation can be changed by the presence of the annealing twins during the tensile deformation,and it causes the increasing of the plastic deformation energy and delay of the fracture,which is considered as the reason for the increasing the ductility. | WANG Lei,LIU Yang,CUI Tong,and ZHAO Xiang School of Materials and Metallurgy,Northeastern University,Shenyang 110004,China | 2007 | Rare Metals2007，26，S1： | 5 |
| 3 | Effects of electric field treatment on microstructures of GH4199 superalloy after long-term aging显示文摘The effects of electric field intensity and treatment temperature on the microstructures of GH4199 superalloy after long-term aging were investigated. The results show that the number and size of carbides and TCP(σphase andμphase) phase in the alloy increase with increasing electric field intensity at the same heat treatment temperature and holding time. While the number and size of carbides and TCP phase are weekly influenced by treatment temperature with lower electric field intensity of 2 kV/cm. When the treat temperature is up to 1 093 K, annealing twins appear in the alloy, and the number of twins increases with increasing holding time. Since the electric field can provide the enough energy for the movement of vacancies and atom, it is considered that the nucleus of the twins formed with formation stack faults due to the mismatch of local atom in crystal caused by the vacancies, and the twins will grow with the increase of holding time. Meanwhile, such promoting effects on atom movement of the electric field increase with the increase of the electric field intensity, meantime the carbides and TCP phase grow fast with the increase of electric field intensity. | 刘杨 王磊 王帅 乔雪璎 王延庆 | 2006 | 中国有色金属学会会刊:英文版2006，16，A03： | 2 |
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