孟凡国,董建新,张麦仓,姚志浩

• 1:北京科技大学材料科学与工程学院

摘要(Abstract)：

采用Gleeble-1500热模拟压缩试验机对028合金进行恒温热压缩实验,变形温度为1120~1220℃,应变速率为0.1~10 s-1,研究了028合金的热变形行为及加工图,得到了028合金最佳的热挤压工艺。结果表明,建立的本构方程能较好的预测028合金在热变形中的峰值应力;028合金在热加工过程中发生动态再结晶,随变形温度升高,动态再结晶百分数和晶粒尺寸逐渐增加,动态再结晶晶粒尺寸随应变速率增加而减小,加工图中存在两个安全区、一个失稳区和一个危险区,028合金的最佳热挤压温度为1200℃,应变速率为1 s-1。

关键词(KeyWords)： 028合金;热变形;组织演变;动态再结晶;加工图

Abstract:

Keywords:

基金项目(Foundation): 国家“863”计划资助项目(2013AA031005)

作者(Author): 孟凡国,董建新,张麦仓,姚志浩

DOI: 10.13289/j.issn.1009-6264.2014.07.001

参考文献(References)：

• [1]陆世英,康喜范.镍基及铁镍基耐蚀合金[M].北京:化学工业出版社,1989:206-208.
• [2]卢绮敏.石油工业中的腐蚀与防护[M].北京:化学工业出版社,2001:86-87.
• [3]杨亮,董建新,张麦仓.690合金高温变形行为与动态再结晶模型[J].稀有金属材料与工程,2012,41(4):727-732.YANG Liang,DONG Jian-xin,ZHANG Mai-cang.Deformation behavior and dynamic recrystallization model for 690 alloy at elevated temperature[J].Rare Metal Materials and Engineering,2012,41(4):727-732.
• [4]李淼泉,姚晓燕,罗皎,等.镍基高温合金GH4169高温变形流动应力模型研究[J].金属学报,2007,43(9):937-942.LI Miao-quan,YAO Xiao-yan,LUO Jiao,et al.Study of flow stress model of the nikel-based superalloy GH4169 at high temperature deformation[J].Acta Metallurgica Sinica,2007,43(9):937-942.
• [5]Sellars C M,Mctegart W J.On the mechanism of hot deformation[J].Acta Metallurgica,1966,14(9):1136-1138.
• [6]Zener C,Hollomon J H.Effect of strain-rate upon the plastic flow of steel[J].Journal of Applied Physics,1944,15(1):22-27.
• [7]逯允海,傅瑞东,邱亮,等.氮强化高锰奥氏体不锈钢热变形行为研究[J].材料热处理学报,2007,28(2):69-72.LU Yun-hai,FU Rui-dong,QIU Liang,et al.Hot deformation behavior of nitrogen strengthened high manganese austenitic stainless steel[J].Transactions of Materials and Heat Treatment,2007,28(2):69-72.
• [8]余永宁.材料科学基础[M].北京:高等教育出版社,2006:755-757.
• [9]王占学.塑性加工金属学[M].北京:冶金工业出版社,1989:172-175.
• [10]Sandstrom R,Lagneborg R.A model for hot working occurring by recrystallization[J].Acta Metallurgica,1975,23(8):387-398.
• [11]Angella G,Wynne B P,Rainforth W M.Microstructure evolution of AISI 316L in torsion at high temperature[J].Acta Materialia,2005,53(5):1263-1275.
• [12]Rao K P,Doraivelu S M,Roshan H M,et al.Deformation processing of an aluminum alloy containing particles:studies on Al-5pct Si alloy 4043[J].Metallurgical Transactions A,1983,14(8):1671-1679.
• [13]Prasad Y V R K,Gegel H L,Doaraivelu S M,et al.Modeling of dynamic material behavior in hot deformation:forging of Ti6242[J].Metallurgical Transactions A,1984,15(10):1883-1892.
• [14]曾卫东,周义刚,周军.加工图理论研究进展[J].稀有金属材料与工程,2006,35(5):673-677.ZENG Wei-dong,ZHOU Yi-gang,ZHOU Jun,et al.Recent development of processing map theory[J].Rare Metal Materials and Engineering,2006,35(5):673-677.
• [15]Prasad Y V R K,Srinivasan N.Hot working characteristics of nimonic 75,80A and 90 superalloys:a comparison using processing maps[J].Journal of Materials Processing Technology,1995,51(4):171-192.
• [16]王艳,王明家,蔡大勇,等.高强度奥氏体不锈钢的热变形行为及其热加工图[J].材料热处理学报,2005,26(4):65-68.WANG Yan,WANG MING-JIA,CAI Da-yong,et al.Hot deformation behavior and processing maps of high strength austenitic stainless steel[J].Transactions of Materials and Heat Treatment,2005,26(4):65-68.
• [17]鞠泉,李殿国,刘国权.15Cr-25Ni-Fe基合金高温塑性变形行为的加工图[J].金属学报,2006,42(2):218-224.JU Quan,LI Dian-guo,LIU Guo-quan.The Processing map of hot plastic deformation of a 15Cr-25Ni-Fe base superalloy[J].Acta Metallurgica Sinica,2006,42(2):218-224.
• [18]厉勇,王春旭,刘宪民,等.Fe-14Co-10Ni合金的高温塑性变形及热加工图[J].材料热处理学报,2009,30(6):84-88.LI Yong,WANG Chun-xu,LIU Xian-min,et al.Hot plastic deformation and processing maps of Fe-14Co-10Ni alloy[J].Transactions of Materials and Heat Treatment,2009,30(6):84-88.

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