为了获得不同沉淀硬化相作用的高温合金在高温长期时效过程中的组织稳定性的对比规律,对3种应用最为广泛的高温合金GH4169、GH4169plus、GH4738经720℃时效后的显微组织和硬度变化进行了对比分析.结果表明,合金的组织稳定性与晶界相和弥散强化相有关,晶界碳化物较晶界δ相稳定,γ'相较γ"相有更好的稳定性,但同为γ'相,组织稳定性还与其和基体的错配度有关.对比3种合金,随时效时间的延长,GH4169plus合金的稳定性稍次于GH4738合金,但要优于GH4169合金.
参考文献
| [1] | 付书红,董建新,张麦仓,谢锡善.新型718合金680 ℃力学性能与长时时效组织变化[J].北京科技大学学报,2007(02):237-241. |
| [2] | S. Cedergren;S. Olovsjo;G. Sjoberg;L. Nyborg .The effects of grain size and feed rate on notch wear and burr formation in wrought Alloy 718[J].The International Journal of Advanced Manufacturing Technology,2013(5/8):1501-1507. |
| [3] | A. Chamanfar;L. Sarrat;M. Jahazi;M. Asadi;A. Weck;A.K. Koul .Microstructural characteristics of forged and heat treated Inconel-718 disks[J].Materials & design,2013(Dec.):791-800. |
| [4] | M. Petrenec;J. Polak;J. Tobias;M. Smid;A. Chlupova;R. Petras.Analysis of cyclic plastic response of nickel based IN738LC superalloy[J].International Journal of Fatigue,2014:44-50. |
| [5] | Whitmore, L.;Leitner, H.;Povoden-Karadeniz, E.;Radis, R.;Stockinger, M..Transmission electron microscopy of single and double aged 718Plus superalloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2012:413-423. |
| [6] | Whitmore L;Ahmadi M R;Guetaz L et al.The mierostructure of heat-treated nickel-based superalloy 718Plus[J].Materials Science and Engineering A,2014,610(0):39-45. |
| [7] | Sayyed Shahabeddin Hosseini;Said Nategh;Ali-Akbar Ekrami .Microstructural evolution in damaged IN738LC alloy during various steps of rejuvenation heat treatments[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2012(1):340-350. |
| [8] | Lawrence Whitmore;Mohammad Reza Ahmadi;Martin Stockinger;Erwin Povoden-Karadeniz;Ernst Kozeschnik;Harald Leitner.Microstructural investigation of thermally aged nickel-based superalloy 718Plus[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2014:253-259. |
| [9] | Jun Xie;Sugui Tian;Li Juan Shang;Xiaoming Zhou.Creep behaviors and role of dislocation network in a powder metallurgy Ni-based superalloy during medium-temperature[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2014:304-312. |
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