Effects of carbon content on the original particle boundary and mechanical properties of HIP FGH4169 alloy
YAO Caogen1,3, YANG Wenhao2, MENG Shuo3, YI Danqing1, LÜ Hongjun3, WANG Bin1
1. School of Materials Science and Engineering, Central South University, Changsha 410083, China;
2. School of Mechanical Engineering, Xiangtan University, Xiangtan 411105, China;
3. Aerospace Research Insititute of Materials & Processing Technology, Beijing 100076, China
Abstract：Three types of FGH4169 alloy with carbon mass fraction of 0.026%, 0.045% and 0.078% were prepared by hot-isostatic pressing (As-HIP) and heat treatment. The effects of carbon content on the original particle boundary (PPB) and mechanical properties of FGH4169 alloy were investigated. The results show that, with the carbon content increases from 0.026% to 0.078%, the precipitated carbide of FGH4169 alloy increases, and when the carbon content exceeds 0.078%, the PPB formed. The carbides in FGH4169 alloy are mainly MC type carbides rich in Ti and Nb, and the carbon content has no obvious effect on the type and morphology of carbides in FGH4169 alloy; Within a certain range of the C content, as the C content increases, the amount of γ″ phase precipitated in the FGH4169 alloy matrix decreases, and the carbides tend to aggregate at the PPB, resulting in the strength and plasticity gradually decreasing under room temperature and 650 ℃.
姚草根, 阳文豪, 孟烁, 易丹青, 吕宏军, 王斌. 碳含量对热等静压FGH4169合金原始颗粒边界与力学性能的影响[J]. 粉末冶金材料科学与工程, 2018, 23(4): 407-413.
YAO Caogen, YANG Wenhao, MENG Shuo, YI Danqing, LÜ Hongjun, WANG Bin. Effects of carbon content on the original particle boundary and mechanical properties of HIP FGH4169 alloy. Materials Science and Engineering of Powder Metallurgy, 2018, 23(4): 407-413.
[1] 师昌绪, 仲增墉. 中国高温合金五十年[M]. 北京: 冶金工业出版社, 2006: 66-67. SHI Changxu, ZHONG Zengyong.China’s High-Temperature Alloy 50 Years[M]. Beijing: Metallurgical Industry Press, 2006: 66-67 [2] CHANG S H.In situ, TEM observation of γ′, γ″ and δ precipitations on Inconel 718 superalloy through HIP treatment[J]. Journal of Alloys & Compounds, 2009, 486(1): 716-721. [3] CHANG L, SUN W, CUI Y, et al.Preparation of hot-isostatic- pressed powder metallurgy super alloy Inconel 718 free of prior particle boundaries[J]. Materials Science and Engineering A, 2017, 682: 341-344. [4] 庄景云. 变形高温合金GH4169[M]. 北京: 冶金工业出版社, 2006: 4-5. ZHUANG Jingyun.Deformation of Superalloy GH4169[M]. Beijing: Metallurgical Industry Press, 2006: 4-5. [5] CHANG L, SUN W, CUI Y, et al.Effect of heat treatment on microstructure and mechanical properties of the hot-isostatic- pressed Inconel 718 powder compact[J]. Journal of Alloys & Compounds, 2014, 590(5): 227-232. [6] 刘明东, 张莹, 刘培英, 等. FGH95粉末高温合金原始颗粒边界及其对性能的影响[J]. 粉末冶金工业, 2006, 16(3): 1-5. LIU Mingdong, ZHANG Ying, LIU Peiying, et al.Study on the PPB defect of P/M superalloy FGH95[J]. Powder Metallurgical Industry, 2006, 16(3): 1-5. [7] 马文斌, 刘国权, 胡本芙, 等. 粉末高温合金FGH96中的原始粉末颗粒边界及其对合金拉伸断裂行为的影响[J]. 粉末冶金材料科学与工程, 2013(1): 1-7. MA Wenbin, LIU Guoquan, HU Benfu, et al.Prior particle boundary and its effect on tensile properties of PM FGH96 superalloy[J]. Materials Science and Engineering of Powder Metallurgy, 2013(1):1-7. [8] 姚草根, 孟烁, 李秀林, 等. 粉末氧含量对热等静压FGH4169合金力学性能与组织的影响[J]. 粉末冶金材料科学与工程, 2017, 22(1): 33-40. YAO Caogen, MENG Shuo, LI Xiulin, et al.Effects of powder oxygen content on mechanical properties and microstructure of FGH4169 alloy[J]. Materials Science and Engineering of Powder Metallurgy, 2017, 22(1): 33-40. [9] CHANG L, SUN W, CUI Y, et al.Effect of heat treatment on microstructure and mechanical properties of the hot-isostatic- pressed Inconel 718 powder compact[J]. Journal of Alloys & Compounds, 2014, 590(5): 227-232. [10] 张莹, 张义文, 张凤戈, 等. 不同粒度的镍基高温合金粉末及其对P/M成形件组织性能影响的研究[J]. 兵器材料科学与工程, 2002, 25(6): 34-36. ZHANG Ying, ZHANG Yiwen, ZHANG Fengge, et al.Nickel- base superalloy powders with different particle sizes and their effects on microstructure and properties of P/M formed parts[J]. Ordnance Material Science and Engineering, 2002, 25(6): 34-36. [11] 刘明东, 张莹, 刘培英, 等. FGH95粉末高温合金原始颗粒边界及其对性能的影响[J]. 粉末冶金工业, 2006, 16(3): 1-5. LIU Mingdong, ZHANG Ying, LIU Peiying, et al.Study on the PPB defect of P/M superalloy FGH95[J]. Powder Metallurgy Industry, 2006, 16(3): 1-5. [12] 周磊, 汪煜, 邹金文. C元素对FGH96粉末高温合金显微组织和力学性能的影响[J]. 粉末冶金技术, 2017, 35(1): 46-52. ZHOU Lei, WANG Yu, ZOU Jinwen.Effect of carbon content on the microstructure and mechanical properties of powder metallurgy superalloy FGH96[J]. Powder Metallurgy Technology, 2017, 35(1): 46-52. [13] ZHENG Wenjie, WEI Xianping, SONG Zhigang, et al.Effects of carbon content on mechanical properties of Inconel 718 alloy[J]. Journal of Iron and Steel Research International, 2015, 22(1): 78-83. [14] RAO G A, SRINIVAS M, SARMA D S. Effect of oxygen content of powder on microstructure and mechanical properties of hot isstatically pressed superalloy Inconel 718[J]. Materials Science & Engineering A, 2006, 435/436(24): 84-89. [15] 胡本芙, 陈焕铭, 宋铎, 等. 镍基高温合金快速凝固粉末颗粒中MC型碳化物相的研究[J]. 金属学报, 2005, 41(10): 1042-1046. WU Huofu, CHEN Huanming, SONG Duo, et al.Study on MC type carbide phase in rapidly solidified powder particles of Ni-based superalloy[J]. Acta Metallurgica Sinica, 2005, 41(10): 1042-1046. [16] 田素贵, 李晶晶, 谢君, 等. FGH95镍基合金的相组成及γ'相的粒度分布[J]. 沈阳工业大学学报, 2011(6): 635-639. TIAN Sugui, LI Jingjing, XIE Jun, et al.Research on Mc type carbide in nickel-based superalloy powders during rapid solidification[J]. Journal of Shenyang Polytechnic University, 2011(6): 635-639. [17] 胡本芙, 陈焕铭, 宋铎, 等. 预热处理对FGH95高温合金粉末中碳化物的影响[J]. 金属学报, 2003, 39(5): 470-475. HU Benfu, CHEN Huanming, SONG Duo, et al.The effect of pre-Heating on carbide preciPatites in FGH95 superalloy powders prepared by prep[J]. Acta Metallurgica Sinica, 2003, 39(5): 470-475. [18] 马文斌, 刘国权, 胡本芙, 等. 粉末高温合金FGH96中的原始粉末颗粒边界及其对合金拉伸断裂行为的影响[J]. 粉末冶金材料科学与工程, 2013(1): 1-7. MA Wenbin, LIU Guoquan, HU Benfu, et al.Prior particle boundary and its effect on tensile properties of PM FGH96 superalloy[J]. Materials Science and Engineering of Powder Metallurgy, 2013(1): 1-7. [19] ZHANG H Y, ZHANG S H, CHENG M, et al.Deformation characteristics of δ phase in the delta-processed Inconel 718 alloy[J]. Materials Characterization, 2010, 61(1): 49-53. [20] 谢锡善, 董建新, 付书红, 等. γ″和γ′相强化的Ni-Fe基高温合金GH4169的研究与发展[J]. 金属学报, 2010, 46(11): 1289-1302. XIE Xishan, DONG Jianxin, FU Shuhong, et al.Research and development of γ″ and γ′ strengthened Ni-Fe base superalloy GH4169[J]. Acta Metallurgica Sinica, 2010, 46(11): 1289-1302. [21] AZADIAN S, WEI Liuying, WARREN R.Delta phase precipitation in Inconel 718[J]. Materials Characterization, 2004, 53(1): 7-16.
2018, Vol. 23 
