热挤压对粉末冶金PM-0002镍基高温合金组织及热变形行为的影响
Effects of Hot Extrusion on Microstructures and Hot Deformation Behavior of Powder Metallurgy Ni-base Superalloy PM-0002
摘 要
对热等静压制备的一种新型粉末冶金PM-0002镍基高温合金进行了热挤压处理, 然后在1 000～1 100 ℃下进行了不同应变速率的热模拟压缩试验, 对比分析了热挤压前后合金的显微组织和热变形行为。结果表明: 该合金经热挤压后, 显微组织中的原始颗粒边界基本被消除, 晶粒为细小的等轴晶粒; 晶粒尺寸由热挤压前的11.29 μm减小到8.32 μm, 且分布较为集中; 在不同温度和应变速率下热压缩时, 热挤压后合金的峰值压缩应力略高于热挤压前的; 热挤压前后合金的变形激活能分别为1 012.9 kJ·mol-1和1 146.9 kJ·mol-1。
镍基高温合金
热挤压
显微组织
热变形
powder metallurgy
Ni-base superalloy
hot extrusion
microstructure
hot deformation
Abstract
A new powder metallurgy Ni-base superalloy PM-0002 prepared by hot isostatic pressing was treated by hot extrusion, and then the hot compression tests were conducted at the temperatures from 1 000 ℃ to 1 100 ℃ and different strain rates. The microstructures and hot deformation behaviors of the alloys before and after hot extrusion were compared and analyzed. The results show that after hot extrusion, the previous particle boundaries in the microstructure of the alloy were almost eliminated and the grains were fine equixial grains. The grain size was reduced from 11.29 μm before hot extrusion to 8.32 μm and had a relatively concentrated distribution. During the hot compression at different temperatures and strain rates, the peak stresses of the alloy after hot extrusion were slightly higher than those before hot extrusion. The deformation activity energies of the alloys before and after hot extrusion were determined as 1 012.9 and 1 146.9 kJ·mol-1 respectively.
中图分类号 TG304 DOI 10.11973/jxgccl201604015
所属栏目 物理模拟与数值模拟
基金项目 国家高技术研究发展计划项目(2012AA03A514); 国家自然科学基金资助项目(51401242); 中南大学研究生自主探索项目(2015zzts031); 有色金属先进结构材料与制造协同创新中心研究生拔尖创新人才培养课题资助项目
收稿日期 2015/9/2
修改稿日期 2016/2/18
网络出版日期
作者单位点击查看
备注何国爱(1989-), 男, 广西贵港人, 博士研究生。
引用该论文: HE Guo-ai,YANG Chuan,LIU Feng,SI Jia-yong,LIU Chen-ze,JIANG Liang. Effects of Hot Extrusion on Microstructures and Hot Deformation Behavior of Powder Metallurgy Ni-base Superalloy PM-0002[J]. Materials for mechancial engineering, 2016, 40(4): 65～70
何国爱,杨川,刘锋,司家勇,刘琛仄,江亮. 热挤压对粉末冶金PM-0002镍基高温合金组织及热变形行为的影响[J]. 机械工程材料, 2016, 40(4): 65～70
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】ALNIAK M O,BEDIR F.Modelling of deformation and microstructural changes in P/M Rene 95 under isothermal forging conditions［J］.Mater Sci Eng A, 2006,429(1/2): 295-303.
【2】HESLOP J.Wrought nickel-chromium heat-resisting alloys containing cobalt［J］.Cobalt,1964,24: 128-134.
【3】TIEN J K,HOWSON T E,CHEN G L,et al.Cobalt availability and superalloys［J］.J Met,1980,32(10): 12-20.
【4】YUAN Y, GU Y F,OSADA T,et al.A new method to strengthen turbine disc superalloys at service temperatures［J］. Scripta Materials,2012,66(11): 884-889.
【5】刘丽玉, 陶春虎, 刘昌奎, 等.发动机粉末合金高压涡轮盘断裂的原因［J］.机械工程材料, 2014,38(8): 108-112.
【6】张义文,上官永恒.粉末高温合金的研究与发展［J］.粉末冶金工业,2004,14(6): 30-43.
【7】国为民,董建新,吴建涛,等.FGH96镍基粉末高温合金的组织和性能［J］.钢铁研究学报,2005,17(1): 59-63.
【8】韩志宇, 曾光, 梁书锦, 等.镍基高温合金粉末制备技术的发展现状［J］.中国材料进展, 2014,33(12): 748-755.
【9】孙黎,邵长星,曾莹雪.国内粉末高温合金的生产工艺及设备［J］.中国科技信息,2014(5): 205-206.
【10】谢锡善.我国高温材料的应用与发展［J］.机械工程材料, 2004,28(1): 2-11.
【11】国为民, 陈生大, 万国岩.用不同方法制取的镍基高温合金粉末性能［J］.航空制造工程, 1998(2): 22-24.
【12】马文斌,刘国权,胡本芙.镍基粉末高温合金FGH96中原始粉末颗粒边界的形成机理［J］.金属学报,2013,49(10): 1248-1254.
【13】刘趁意,王淑云,李付国.粉末高温合金挤压变形组织及变形机理研究［J］.试验研究, 2009(1): 84-89.
【14】HALL E O.The deformation and ageing of mild steel: III discussion of results［J］.Proceedings of the Physical Society (Section B),1951,64(9): 747-753.
【15】SELLARS C M,MCTEGART W J.On the mechanism of hot deformation［J］.Acta Metallurgica,1966,14(9): 1136-1138.
【16】WU Kai,LIU Guo-quan,HU Beng-fu,et al.Hot compressive deformation behavior of a new isostatically pressed Ni-Cr-Co based powder metallurgy superalloy［J］.Materials and Design,2011,32: 1872-1879
【2】HESLOP J.Wrought nickel-chromium heat-resisting alloys containing cobalt［J］.Cobalt,1964,24: 128-134.
【3】TIEN J K,HOWSON T E,CHEN G L,et al.Cobalt availability and superalloys［J］.J Met,1980,32(10): 12-20.
【4】YUAN Y, GU Y F,OSADA T,et al.A new method to strengthen turbine disc superalloys at service temperatures［J］. Scripta Materials,2012,66(11): 884-889.
【5】刘丽玉, 陶春虎, 刘昌奎, 等.发动机粉末合金高压涡轮盘断裂的原因［J］.机械工程材料, 2014,38(8): 108-112.
【6】张义文,上官永恒.粉末高温合金的研究与发展［J］.粉末冶金工业,2004,14(6): 30-43.
【7】国为民,董建新,吴建涛,等.FGH96镍基粉末高温合金的组织和性能［J］.钢铁研究学报,2005,17(1): 59-63.
【8】韩志宇, 曾光, 梁书锦, 等.镍基高温合金粉末制备技术的发展现状［J］.中国材料进展, 2014,33(12): 748-755.
【9】孙黎,邵长星,曾莹雪.国内粉末高温合金的生产工艺及设备［J］.中国科技信息,2014(5): 205-206.
【10】谢锡善.我国高温材料的应用与发展［J］.机械工程材料, 2004,28(1): 2-11.
【11】国为民, 陈生大, 万国岩.用不同方法制取的镍基高温合金粉末性能［J］.航空制造工程, 1998(2): 22-24.
【12】马文斌,刘国权,胡本芙.镍基粉末高温合金FGH96中原始粉末颗粒边界的形成机理［J］.金属学报,2013,49(10): 1248-1254.
【13】刘趁意,王淑云,李付国.粉末高温合金挤压变形组织及变形机理研究［J］.试验研究, 2009(1): 84-89.
【14】HALL E O.The deformation and ageing of mild steel: III discussion of results［J］.Proceedings of the Physical Society (Section B),1951,64(9): 747-753.
【15】SELLARS C M,MCTEGART W J.On the mechanism of hot deformation［J］.Acta Metallurgica,1966,14(9): 1136-1138.
【16】WU Kai,LIU Guo-quan,HU Beng-fu,et al.Hot compressive deformation behavior of a new isostatically pressed Ni-Cr-Co based powder metallurgy superalloy［J］.Materials and Design,2011,32: 1872-1879
相关信息
