王孟,王忠,孙世超,冯显磊,谢玲珍

• 1:山推工程机械股份有限公司

摘要(Abstract)：

采用Gleeble-3500热模拟机研究了06Cr25Ni20不锈钢在变形温度为950~1200℃,应变速率为0.5~50 s-1条件下的热压缩变形行为。通过线性回归分析确定06Cr25Ni20不锈钢的应变硬化指数以及变形表观激活能,获得06Cr25Ni20不锈钢高温条件下的流变应力本构方程,并验证该流变应力本构方程的准确性。研究结果表明,06Cr25Ni20不锈钢在热压缩变形过程中发生了明显的动态回复与动态再结晶,流变应力随应变速率的增加而增加,随温度升高而降低。

关键词(KeyWords)： 06Cr25Ni20不锈钢;热压缩变形;流变应力;本构方程

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 王孟,王忠,孙世超,冯显磊,谢玲珍

DOI: 10.13289/j.issn.1009-6264.2014.12.040

参考文献(References)：

• [1]牛济泰.材料与热加工领域的物理模拟技术[M].北京:国防工业出版社,1999:147.
• [2]李佃国,尹法杰,李长荣.GH674高温合金的热变形行为[J].金属热处理,2005,30(8):5-7.LI Dian-guo,YIN Fa-jie,LI Chang-rong.Hot compressive deformation behavior of superalloy GH674[J].Heat Treatment of Metal,2005,30(8):5-7.
• [3]Del Valle J A,Picasso A C,Alvarez I,et al.Age-hardening behavior of Inconel X-750 superalloy[J].Scripta Materialia,1999,41(3):237-243.
• [4]Del Valle J A,Romero R,Picasso A C.Bauschinger effect in age-hardened Inconel X-750 alloy[J].Materials Science and Engineering A,2001,311:100-107.
• [5]Ferreno D,Gorrochategui I,Sanchez L,et al.Optimisation of heat treatment for improvement of IGSCC properties of Inconel X-750[J].Engineering Failure Analysis,2004,11:799-810.
• [6]Appa Rao G,Kumar M,Srinivas M,et al.Effect of standard heat treatment on the microstructure and mechanical properties of hot isostatically pressed superalloy inconel 718[J].Materials Science and Engineering A,2003,355(1/2):114-125.
• [7]张辉,彭大暑,杨立斌,等.铝合金多道次热轧流变应力的研究[J].热加工工艺,2000(5):6-8.ZHANG Hui,PENG Da-shu,YANG Li-bin,et al.The study of flow stress for multipass hot-rolling of aluminum alloys[J].Hot Working Technology,2000(5):6-8.
• [8]吴文祥,孙德勤,曹春艳,等.5083铝合金热压缩变形流变应力行为[J].中国有色金属学报,2007,17(10):1667-1671.WU Wen-xiang,SUN De-qin,CAO Chun-yan,et al.Flow stress behavior of 5083 aluminum alloy under hot compression deformation[J].The Chinese Journal of Nonferrous Materials,2007,17(10):1667-1671.
• [9]蔺永诚,陈明松,钟掘.42Cr Mo钢的热压缩流变应力行为[J].中南大学学报:自然科学版,2008,39(3):549-553.LIN Yong-cheng,CHEN Ming-song,ZHONG Jue.Flow stress behaviors of 42Cr Mo steel during hot compression[J].Journal of Central South University,2008,39(3):549-553.
• [10]Sellars C M,Tegart W J M.On the mechanism of hot deformation[J].Acta Metallurgica,1997,13(3):210-216.
• [11]Zener C,Hollomon J H.Effect of strain rate upon the plastic flow of steel[J].Journal of Applied Geophysics,1944,15(1):22-32.

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