后处理对选区激光熔化成形K536合金显微组织及力学性能的影响

doi:10.13251/j.issn.0254-6051.2021.01.033

金属热处理 ›› 2021, Vol. 46 ›› Issue (1): 181-186.DOI: 10.13251/j.issn.0254-6051.2021.01.033

后处理对选区激光熔化成形K536合金显微组织及力学性能的影响

王栋, 苏梦瑶, 莫战海, 徐杏杏, 周晓卫, 谢晓林

中国航发西安航空发动机有限公司,陕西西安 710021

收稿日期:2020-06-25 出版日期:2021-01-25 发布日期:2021-01-26
作者简介:王栋(1992—),男,工程师,硕士,主要研究方向为增材制造技术,E-mail:wls5738@163.com

Effect of post-processing on microstructure and mechanical properties of selective laser melting K536 alloy

Wang Dong, Su Mengyao, Mo Zhanhai, Xu Xingxing, Zhou Xiaowei, Xie Xiaolin

AECC Xi'an Aero-Engine Ltd.,Xi'an Shaanxi 710021,China

Received:2020-06-25 Online:2021-01-25 Published:2021-01-26

摘要/Abstract

摘要： 采用选区激光熔化技术成形K536合金并对其进行后处理,分别分析了沉积态、退火态、退火+固溶态、退火+固溶+热等静压态合金试样的显微组织和力学性能。结果表明:沉积态试样横、纵向截面均产生微裂纹;退火态试样的横向截面组织为等轴晶,纵向晶粒形态为柱状晶,且晶粒尺寸波动较大,形成了交替分布的细晶区和粗晶区;退火+固溶态试样发生部分再结晶,在再结晶部分可以观察到孪晶的存在,且出现明显的等轴晶组织,晶粒大小不均匀,晶界析出物呈长条状形态;经热等静压处理后试样的晶粒明显增大,沉积态产生的裂纹基本愈合,且高温持久性能指标达到ASTM标准要求,其晶内析出的碳化物分布均匀,晶界处的碳化物呈链状分布。

关键词: K536合金, 选区激光熔化, 后处理, 显微组织, 力学性能

Abstract: K536 alloy was formed by selective laser melting then post-processed.The microstructure and mechanical properties of the alloy were analyzed in as-deposited,as-annealed,and as-annealed+solid solution treated,as-annealed+solid solution treated+hot isostatic pressed,respectively.The results show that microcracks form in the transversal and longitudinal sections of the as-deposited specimens.For the as-annealed specimens,the transversal section microstructure is composed of equiaxed grains and the longitudinal one is of columnar grains,and the grain size fluctuates greatly,forming alternating fine and coarse-grained areas.Partial recrystallization occurs in the as-annealed+solid solution treated specimens,with twin crystals being observed in the recrystallized part.In addition,there are obvious equiaxed grain structure,uneven grain size,and grain boundary precipitates with long strip shape.After the hot isostatic pressing,the grain size of specimens increases obviously,the deposition generated cracks are basically healed,and the high-temperature durability index meets the requirements of related ASTM standard.The transgranular carbides are evenly distributed,and the carbides at the grain boundary are in chains.

Key words: K536 alloy, selective laser melting, post-processing, microstructure, mechanical properties

中图分类号:

TG174.4

王栋, 苏梦瑶, 莫战海, 徐杏杏, 周晓卫, 谢晓林. 后处理对选区激光熔化成形K536合金显微组织及力学性能的影响[J]. 金属热处理, 2021, 46(1): 181-186.

Wang Dong, Su Mengyao, Mo Zhanhai, Xu Xingxing, Zhou Xiaowei, Xie Xiaolin. Effect of post-processing on microstructure and mechanical properties of selective laser melting K536 alloy[J]. Heat Treatment of Metals, 2021, 46(1): 181-186.

参考文献

[1] 卢秉恒,李涤尘.增材制造(3D打印)技术发展[J].机械制造与自动化,2013,42(4):1-4.
Lu Bingheng,Li Dichen.Development of the additive manufacturing (3D printing) technology[J].Machine Building and Automation,2013,42(4):1-4.
[2] 王强,孙跃.增材制造技术在航空发动机中的应用[J].航空科学技术,2014,25(9):6-10.
Wang Qiang,Sun Yue.Applications of additive manufacturing technology on aero-engine[J].Aeronautical Science and Technology,2014,25(9):6-10.
[3] Wang F D.Mechanical property study on rapid additive layer manufacture Hastelloy-X alloy by selective laser melting technology[J].International Journal of Advanced Manufacturing Technology,2012,58(5/8):545-551.
[4] Tomus D,Jarvis T,Wu X,et al.Controlling the microstructure of Hastelloy-X components manufactured by selective laser melting[J].Physics Procedia,2013,41:823-827.
[5] Tomus D,Tian Y,Rometsch P A,et al.Influence of post heat treatments on anisotropy of mechanical behavior and microstructure of Hastelloy-X parts produced by selective laser melting[J].Materials
Scienceand Engineering A,2016,667:42-53.
[6] 侯慧鹏,梁永朝,何艳丽,等.选区激光熔化Hastelloy-X 合金组织演变及拉伸性能[J].中国激光,2017,44(2):263-268.
Hou Huipeng,Liang Yongchao,He Yanli,et al.Microstructural evolution and tensile property of Hastelloy-X alloys produced by selective laser melting[J].Chinese Journal of Lasers,2017,44(2):263-268.
[7] Xu R D,Jiao Z H,Yu H C.Experimental evaluation of fatigue behaviors and tensile properties of selective laser melted K536 alloy at elevated temperatures[J].Procedia Structural Integrity,2017,7:84-91.
[8] Zhao J C,Larsen M.Phase precipitation and time-temperature-transformation diagram of Hastelloy-X[J].Materials Science and Engineering A,2000,293:112-119.
[9] Belan J.GCP and TCP phases presented in nickel-base superalloys[J].Materials Today:Proceedings,2016,3(4):936-941.
[10] Qin X Z,Guo J T,Yuan C,et al.Precipitation and thermal instability of M₂₃C₆ carbide in cast Ni-base superalloy K452[J].Materials Letters,2008,62(2):258-261.
[11] Wang F,Wu X H,Clark D.On direct laser deposited Hastelloy-X:Dimension,surface finish,microstructure and mechanical properties[J].Materials Science and Technology,2011,27(1):344-356.
[12] 中国金属学会高温材料分会.中国高温合金手册:China Superalloys Handbook.上卷,变形高温合金焊接用高温合金丝[M].北京:中国标准出版社,2012:160-181.

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后处理对选区激光熔化成形K536合金显微组织及力学性能的影响

Effect of post-processing on microstructure and mechanical properties of selective laser melting K536 alloy

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