Advanced Search
WANG Shuai, FU Liming, YUAN Yong, YIN Hongfei, XU Jijin, GU Yuefeng. Mechanism and elimination of hot cracks in laser additive manufacturing of NiFe based superalloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2022, 43(5): 8-13. DOI: 10.12073/j.hjxb.20220101001
Citation: WANG Shuai, FU Liming, YUAN Yong, YIN Hongfei, XU Jijin, GU Yuefeng. Mechanism and elimination of hot cracks in laser additive manufacturing of NiFe based superalloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2022, 43(5): 8-13. DOI: 10.12073/j.hjxb.20220101001

Mechanism and elimination of hot cracks in laser additive manufacturing of NiFe based superalloy

More Information
  • Received Date: December 31, 2021
  • Available Online: April 15, 2022
  • To solve the problem of hot cracking in laser additive manufacturing process of NiFe based superalloy, the formation mechanism of hot crack was investigated, and the method of interlayer temperature control and powder nitriding to reduce the sensitivity of hot crack was proposed in the laser additive process of NiFe based superalloy. The results show that the occurrence of hot crack is mainly caused by element segregation and thermal stress. Most of the hot cracks are located at the high angle grain boundary, which own higher grain boundary energy to extend existing time of liquid film in grain boundaries during the cooling process, so the obvious segregation phenomenon occurs. When the interlayer temperature is lower, the cooling rate is faster, which can reduce the growth of harmful carbides in the superalloy. The proportion of high angle grain boundary is reduced, and the probability of hot crack is reduced further. Another method is to form stable nitrides by pre-nitriding Ti, Nb elements in the powder, which inhibits element segregation, increases the nucleation points and promotes grain refinement, therefore, the hot crack sensitivity of the superalloy is decreased.
  • Zhang P, Li J, Gong X, et al. Creep behavior and deformation mechanisms of a novel directionally solidified Ni-base superalloy at 900 °C[J]. Materials Characterization, 2019, 148: 201 − 207. doi: 10.1016/j.matchar.2018.12.023
    袁勇, 党莹樱, 杨珍, 等. 700℃先进超超临界机组末级过热器用新型镍铁基高温合金的组织与性能[J]. 机械工程材料, 2020, 44(1): 44 − 50. doi: 10.11973/jxgccl202001008

    Yuan Yong, Dang Yingying, Yang Zhen, et al. Microstructure and properties of Ni-Fe-base superalloy for 700 ℃ advanced ultra supercritical unit final superheater[J]. Materials for Mechanical Engineering, 2020, 44(1): 44 − 50. doi: 10.11973/jxgccl202001008
    Ostovari Moghaddam A, Shaburova N A, Samodurova M N, et al. Additive manufacturing of high entropy alloys: A practical review[J]. Journal of Materials Science & Technology, 2021, 77: 131 − 162.
    Lin D, Xu L, Li X, et al. A Si-containing FeCoCrNi high-entropy alloy with high strength and ductility synthesized in situ via selective laser melting[J]. Additive Manufacturing, 2020, 35: 101340. doi: 10.1016/j.addma.2020.101340
    Zheng M, Li C, Zhang X, et al. The influence of columnar to equiaxed transition on deformation behavior of FeCoCrNiMn high entropy alloy fabricated by laser-based directed energy deposition[J]. Additive Manufacturing, 2021, 37: 101660. doi: 10.1016/j.addma.2020.101660
    Griffiths S, Ghasemi H, Ivas T, et al. Combining alloy and process modification for micro-crack mitigation in an additively manufactured Ni-base superalloy[J]. Additive Manufacturing, 2020, 36: 101443. doi: 10.1016/j.addma.2020.101443
    Sun Z, Tan X, Wang C, et al. Reducing hot tearing by grain boundary segregation engineering in additive manufacturing: example of an AlxCoCrFeNi high-entropy alloy[J]. Acta Materialia, 2021, 204: 116505. doi: 10.1016/j.actamat.2020.116505
    Montero L, Liu Z, Bautmans L, et al. Effect of temperature on the microstructure and tensile properties of micro-crack free hastelloy X produced by selective laser melting[J]. Additive Manufacturing, 2020, 31: 100995. doi: 10.1016/j.addma.2019.100995
    王爱华, 彭云, 肖红军, 等. 层间温度对690 MPa级HSLA钢熔敷金属裂纹扩展功的影响[J]. 焊接学报, 2012, 33(8): 65 − 68, 72.

    Wang Aihua, Peng Yun, Xiao Hongjun, et al. Effects of interpass temperature on crack propagation energy in deposited metal of 690 MPa grade HSLA steel[J]. Transactions of the China Welding Institution, 2012, 33(8): 65 − 68, 72.
    Liu P, Zhang R, Yuan Y, et al. Effects of nitrogen content on microstructures and tensile properties of a new Ni-Fe based wrought superalloy[J]. Materials Science and Engineering: A, 2021, 801: 140436. doi: 10.1016/j.msea.2020.140436
    刘悦, 熊建坤, 赵海燕, 等. Hastelloy X和Haynes 230激光焊接头的组织性能[J]. 焊接学报, 2017, 38(8): 82 − 86.

    Liu Yue, Xiong Jiankun, Zhao Haiyan, et al. Microstructure of laser-welded Hastelloy X and laser-welded Haynes 230[J]. Transactions of the China Welding Institution, 2017, 38(8): 82 − 86.
    冯伟, 徐锴, 郭枭, 等. 镍基丝极埋弧焊材料焊接热裂纹的分析与防止[J]. 焊接, 2016(8): 64 − 67, 76. doi: 10.3969/j.issn.1001-1382.2016.08.014

    Feng Wei, Xu Kai, Guo Xiao, et al. Analysis and prevention of hot crack in nickel based submerged arc welding material welding[J]. Welding & Joining, 2016(8): 64 − 67, 76. doi: 10.3969/j.issn.1001-1382.2016.08.014
    Guo X, Liu S, Xu J, et al. Effect of step cooling process on microstructures and mechanical properties in thermal simulated CGHAZ of an ultra-high strength steel[J]. Materials Science and Engineering: A, 2021, 824: 141827. doi: 10.1016/j.msea.2021.141827
    Xu J, Wang S, Chai Z, et al. Comparison of the stress corrosion cracking behaviour of AISI 304 pipes welded by TIG and LBW[J]. Acta Metallurgica Sinica (English Letters), 2021, 34(4): 579 − 589. doi: 10.1007/s40195-020-01126-9
    郭枭, 徐锴, 霍树斌, 等. 镍基合金焊丝GTAW熔敷金属凝固偏析行为[J]. 焊接学报, 2019, 40(7): 105 − 108. doi: 10.12073/j.hjxb.2019400190

    Guo Xiao, Xu Kai, Huo Shubin, et al. Investigation on the solidification segregation behavior of GTAW nickel alloy deposited metal[J]. Transactions of the China Welding Institution, 2019, 40(7): 105 − 108. doi: 10.12073/j.hjxb.2019400190
    Zhao P, Fang K, Tang C, et al. Effect of interlayer cooling time on the temperature field of 5356-TIG wire arc additive manufacturing[J]. China Welding, 2021, 30(2): 17 − 24.
    Xu J, Lin X, Guo P, et al. The initiation and propagation mechanism of the overlapping zone cracking during laser solid forming of IN-738LC superalloy[J]. Journal of Alloys and Compounds, 2018, 749: 859 − 870. doi: 10.1016/j.jallcom.2018.03.366
  • Related Articles

    [1]WANG Huaishen, CHEN Lei, ZHANG Hongxia, CHAI Fei, YAN Xiaoying, DONG Peng. Microstructure and corrosion behavior of selective laser melting Ti-6Al-4V alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION. DOI: 10.12073/j.hjxb.20240106001
    [2]GE Yaqiong, SONG Yue, CHANG Zexin, HOU Qingling, XU Haijun, QIAO Jianfu, HOU Min. Forming Quality and Microstructure of Al0.5CoCrFeNi Bulk High-Entropy Alloy Fabricated by Selective Laser Melting[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION. DOI: 10.12073/j.hjxb.20231128003
    [3]WANG Qun, QU Yuntao, ZHANG Biao, ZHANG Yuxian, LI Rui, LI Ning, YAN Jiazhen. Bending fatigue behavior of biomedical Ti-6Al-4V alloy prepared by selective laser melting[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2024, 45(4): 57-64. DOI: 10.12073/j.hjxb.20230421001
    [4]ZHU Jie, ZHOU Qingjun, CHEN Xiaohui, FENG Kai, LI Zhuguo. Influence of layer thickness on the microstructure and mechanical properties of selective laser melting processed GH3625[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2023, 44(10): 12-17. DOI: 10.12073/j.hjxb.20230306002
    [5]CHEN Yanxing, LIU Xiuguo, ZHAO Yangyang, GONG Baoming, WANG Ying, LI Chengning. Microstructure and dynamic fracture behaviors of 17-4PH stainless steel fabricated by selective laser melting[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2023, 44(2): 1-9. DOI: 10.12073/j.hjxb.20220306001
    [6]BA Peipei, DONG Zhihong, ZHANG Wei, PENG Xiao. Microstructure and mechanical properties of 12CrNi2 alloy steel manufactured by selective laser melting[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2021, 42(8): 8-17. DOI: 10.12073/j.hjxb.20210323003
    [7]ZHANG Yu, JIANG Yun, HU Xiaoan. Microstructure and high temperature creep properties of Inconel 625 alloy by selective laser melting[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2020, 41(5): 78-84. DOI: 10.12073/j.hjxb.20191211001
    [8]YANG Tianyu, ZHANG Penglin, YIN Yan, LIU Wenzhao, ZHANG Ruihua. Microstructure based on selective laser melting and mechanical properties prediction through artificial neural net[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(6): 100-106. DOI: 10.12073/j.hjxb.2019400162
    [9]YIN Yan<sup>1</sup>, LIU Pengyu<sup>1</sup>, LU Chao<sup>2</sup>, XIAO Mengzhi<sup>1,3</sup>, ZHANG Ruihua<sup>2,3</sup>. Microstructure and tensile properties of selective laser melting forming 316L stainless steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(8): 77-81. DOI: 10.12073/j.hjxb.2018390205
    [10]CAO Jian, FENG Ji-cai, LI Zhuo-ran. Selection of interlayer for field-assisted self-propagated high temperature joining of TiAl alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2004, (5): 1-4.

Catalog

    Article views (823) PDF downloads (124) Cited by()

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return