利用电子束熔炼技术制备Inconel 740合金,研究热处理状态下合金的组织演变过程与显微硬度的分布情况,分析热处理过程中合金相析出规律与相分布特点.结果表明:合金宏观组织良好,夹杂物含量较少,晶粒尺寸在2mm左右.标准热处理后的组织主要为奥氏体,并有大量孪晶,晶界上碳化物M23C6呈连续分布,同时也有G相和η相析出.晶内析出大量球形、尺寸大小约为30nm的强化相γ'.电子束熔炼制备的Inconel 740合金在标准热处理状态下的显微硬度明显高于传统方法制备的同种合金,约高120HV0.1.
参考文献
| [1] | 郭建亭.高温合金在能源工业领域中的应用现状与发展[J].金属学报,2010(05):513-527. |
| [2] | 郭建亭,周兰章,袁超,侯介山,秦学智.我国独创和独具特色的几种高温合金的组织和性能[J].中国有色金属学报,2011(02):237-250. |
| [3] | SMITH G D.Introduction of an advanced superheater alloy for coal-fired boilers[A].Houston:International NACE Press,2000:1-12. |
| [4] | R. Viswanathan;K. Coleman;U. Rao .Materials for ultra-supercritical coal-fired power plant boilers[J].International Journal of Pressure Vessels and Piping,2006(11/12):778-783. |
| [5] | ZHAO S Q;XIE X S;SMITH D G et al.Research and improvement on structure stability and corrosion resistance of nickelbase superalloy INCONEL alloy 740[J].Materials and Design,2005,27(10):1120-1127. |
| [6] | Christopher J. Cowen;Paul E. Danielson;Paul D. Jablonski .The Microstructural Evolution of Inconel Alloy 740 During Solution Treatment, Aging, and Exposure at 760℃[J].Journal of Materials Engineering and Performance,2011(6):1078-1083. |
| [7] | Zhonghua Zhang;Jan Frenzel;Klaus Neuking .On the reaction between NiTi melts and crucible graphite during vacuum induction melting of NiTi shape memory alloys[J].Acta materialia,2005(14):3971-3985. |
| [8] | 李清华,赵志力.真空冶金现状及发展前景[J].沈阳大学学报,2003(02):35-37,42. |
| [9] | 王晓峰,周晓明,穆松林,邹金文.高温合金熔炼工艺讨论[J].材料导报,2012(07):108-113,135. |
| [10] | 郭建亭.高温合金材料学(中册)制备工艺[M].北京:科学出版社,2008 |
| [11] | 张文林,孙涛,李娟莹.电子束熔炼及其设备[J].冶金设备,2003(04):32-34,31. |
| [12] | CHOUDHURY A;HENGSBERGER Y .Electron beam melting and refining of metals and alloys[J].ISIJ International,1992,32(05):673-681. |
| [13] | 郭岩,周荣灿,侯淑芳,张红军,林琳.镍基合金的析出相及强化机制[J].金属热处理,2011(07):46-50. |
| [14] | 李秀艳,张建,戎利建,李依依.Fe-Ni基合金中次生η相的析出机理[J].材料研究学报,2006(02):113-119. |
| [15] | 陈思成,李长荣,杜振民,郭翠萍,李志风,张麦仓.Ni基高温合金共格强化相平衡形状的能量分析[J].材料热处理学报,2012(12):147-151. |
| [16] | 陈昊,董建新,张麦仓.热处理工艺对铸造高温合金K480组织的影响[J].材料热处理学报,2012(07):37-44. |
| [17] | Shuangqun Zhao;Xishan Xie;Gaylord D. Smith .Microstructural stability and mechanical properties of a new nickel-based superalloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):96-105. |
| [18] | Shuangqun Zhao;Xishan Xie;Gaylord D. Smith .Gamma prime coarsening and age-hardening behaviors in a new nickel base superalloy[J].Materials Letters,2004(11):1784-1787. |
| [19] | 姚志浩,董建新,陈旭,张麦仓,郑磊.GH738高温合金长期时效过程中γ'相演变规律[J].材料热处理学报,2013(01):31-37. |
| [20] | 胡赓祥;蔡殉;戎咏华.材料科学基础[M].上海:上海交通大学出版社,2006 |
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