霍万晨,刘建涛,张明,贾建,张国星

• 1:钢铁研究总院高温材料研究所
• 2:高温合金新材料北京市重点实验室
• 3:北京钢研高纳科技股份有限公司

摘要(Abstract)：

采用正交设计与有限元模拟相结合的方法对热等静压态的一种新型四代镍基粉末高温合金包覆挤压工艺进行了优化设计,分析了坯料初始温度、挤压速度、模具模角等关键参数对挤压棒材的应变、温度分布及成形载荷的影响。结果表明:随着挤压速度、模角的增大,挤压棒材的温度、应变及挤压载荷升高;随坯料初始温度的升高,挤压棒材温度升高,挤压载荷降低;坯料初始温度、挤压速度对应变分布无影响。基于模拟结果给出的优化热挤压参数为:坯料初始温度1090～1100℃,挤压速度30～40 mm/s,模角40°。采用优化的工艺参数组合进行热挤压试验,获得了晶粒度10级以上的热挤压细晶棒材。

关键词(KeyWords)： 第四代镍基粉末高温合金;热挤压;数值模拟;试验验证

Abstract:

Keywords:

基金项目(Foundation): 国家科技重大专项(2017-Ⅵ-0008-0078)

作者(Author): 霍万晨,刘建涛,张明,贾建,张国星

DOI: 10.13289/j.issn.1009-6264.2020-0335

参考文献(References)：

• [1] 张义文,刘建涛.粉末高温合金研究进展[J].中国材料进展,2013,32(1):1-11.ZHANG Yi- wen,LIU Jian-tao.Development in powder metallurgy superalloy[J].Materials China,2013,32(1):1-11.
• [2] Dever J A,Nathal M V,Dicarlo J A.Research on high-temperature aerospace materials at NASA Glenn Research Center[J].Journal of Aerospace Engineering,2013,26(2):500-514.
• [3] Alniak M O,Bedir F.Hot forging behavior of nickel based superalloys under elevated temperatures[J].Materials and Design,2010,31(3):1588-1592.
• [4] 王淑云,李惠曲,计晟,等.等温锻造FGH96合金超塑性研究[J].航空材料学报,2003(S1):25-28.WANG Shu-yun,LI Hui-qu,JI Sheng,et al.Study on the superplastic behavior of isothermally forged FGH96 alloy[J].Journal of Aeronautical Materials,2003(S1):25-28.
• [5] Stoz D S.Effect of a supersolvus heat treatment on the microstructure and mechanical properties of a powder metallurge processed nickel-base superalloy[D].Florida:University of Florida,2004.
• [6] Sharpe H J.Effeet of microstructure on high-temperature mechanical behavior of nickel-base superalloys for turbine dise Application[D].Atlanta:Georgia Institute of Technology,2007.
• [7] 国为民,董建新,吴剑涛,等.FGH96镍基粉末高温合金的组织和性能[J].钢铁研究学报,2005(1):59-63.GUO Wei-min,DONG Jian-xin,WU Jian-tao,et al.Microstructure and properties of PM superalloys FGH96[J].Journal of Iron and Steel Research,2005(1):59-63.
• [8] Liu C Z,Liu F,Huang L,et al.Effect of hot extrusion and heat treatment on microstructure of nickel-base superalloy[J].Transactions of Nonferrous Metals Society of China,2014,24(8):2544-2553.
• [9] 刘趁意,王淑云,东赟鹏,等.FGH96合金挤压过程的数值模拟与试验研究[J].锻压装备与制造技术,2010,45(2):103-107.LIU Chen-yi,WANG Shu-yun,DONG Yun-peng,et al.Numerical simulation and testing study on extrusion process of FGH96 alloy[J].China Metal Forming Equipment and Manufacturing Technology,2010,45(2)103-107.
• [10] 朱兴林,刘东,杨艳慧,等.FGH96合金包覆挤压过程数值模拟[J].航空材料学报,2013,33(1):21-27.ZHU Xing-lin,LIU Dong,YANG Yan-hui,et al.Numerical simulation for canning extrusion process of FGH96[J].Journal of Aeronautical Materials,2013,33(1):21-27.
• [11] 张明,刘国权,胡本芙,等.新型镍基粉末高温合金热挤压工艺有限元模拟与实验验证[J].粉末冶金技术,2018(3):223-229.ZHANG Ming,LIU Guo-quan,HU Ben-fu,et al.Finit element simulation and experimental verification on hot extrusion of a novel nickel-base P/M superalloy[J].Powder Metallurgy Technology,2018(3):223-229.
• [12] 侯琼,陶宇,贾建,等.一种新型第四代粉末高温合金热变形行为及其本构方程[J].粉末冶金工业,2020,30(2):50-55.HOU Qiong,TAO Yu,JIA Jian,et al.Hot deformation behavior and constitutive equation of an advanced fourth generation powder metallurgy superalloy[J].Powder Metallurgy Industry,2020,30(2):50-55.
• [13] Semiatin S L,Shank J M,Shiveley A R,et al.The effect of forging variables on the supersolvus heat-treatment response of powder-metallurgy nickel-base superalloys[J].Metallurgical Materials Transactions A,2014,45(13):6231-6251.
• [14] Wu K,Liu G Q,Hu B F,et al.Characterization of hot deformation behavior of a new Ni-Cr-Co based P/M superalloy[J].Materials Characterization,2010,61(3):330-340.
• [15] Ning Y Q,Yao Z K,Lei Y Y,et al.Hot deformation behavior of the post-cogging FGH4096 superalloy with fine equiaxed microstructure[J].Materials Characterization,2011,62(9):887-893.
• [16] 张明,刘国权,胡本芙.镍基粉末高温合金热加工变形过程中显微组织不稳定性对热塑性的影响[J].金属学报,2017,53(11):1469-1477.ZHANG Ming,LIU Guo-quan,HU Ben-fu.Effect of microstructure instability on hot plasticity during thermomechanical processing in PM nickel-based superalloy[J].Acta Metallurgica Sinica,2017,53(11):1469-1477.
• [17] Zhang B J,Zhao G P,Zhang W Y,et al.Deformation mechanisms and microstructural evolution of γ + γ′ duplex aggregates generated during thermomechanical processing of nickel-base superalloys[C]//Proceedings of the 13th International Symposium on Superalloys.Seven Springs,PA,2016:487.
• [18] Kozar R W,Suzuki A,Milligan W W,et al.Strengthening mechanisms in polycrystalline multimodal nickel-base superalloys[J].Metallurgical and Materials Transactions A,2009,40(7):1588-1603.
• [19] 余永宁.金属学原理[M].北京:冶金工业出版社,2000:306.
• [20] 侯琼,陶宇,贾建.第四代粉末高温合金热变形后的“项链”组织[J].材料工程,2019,47(3):94-100.HOU Qiong,TAO Yu,JIA Jian.“Necklace” structure of the 4th generation powder metallurgy superalloy after hot deformation[J].Journal of Materials Engineering,2019,47(3):94-100.

文章评论(Comment)：