选区激光熔化TC4小裂纹扩展特性数值模拟

徐宇飞; 胡殿印; 米栋; 潘锦超; 王荣桥

doi:10.13224/j.cnki.jasp.20210043

选区激光熔化TC4小裂纹扩展特性数值模拟

doi: 10.13224/j.cnki.jasp.20210043

徐宇飞¹,
胡殿印^1,2, ,,
米栋³,
潘锦超⁴,
王荣桥^1,2,4

1.
北京航空航天大学航空发动机研究院，北京 100191
2.
北京航空航天大学航空发动机结构强度北京市重点实验室，北京 100191
3.
中国航空发动机集团有限公司湖南动力机械研究所，湖南株洲 412002
4.
北京航空航天大学能源与动力工程学院，北京 100191

基金项目: 国家自然科学基金（52022007）；国家科技重大专项（2017-Ⅳ-0004-0041）

详细信息

作者简介:
徐宇飞（1999-），女，硕士生，主要从事增材制造材料小裂纹扩展研究。

通讯作者:
胡殿印（1980-），女，教授，博士，研究领域为发动机结构强度及疲劳可靠性。E-mail： hdy@buaa.edu.cn

中图分类号: V252.2
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- 文章访问数: 95
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- 被引次数: 0
出版历程
- 收稿日期: 2021-01-27
- 刊出日期: 2021-12-28

Numerical simulation of small crack growth in selective laser melting TC4

XU Yufei¹,
HU Dianyin^{1,2
, ,},
MI Dong³,
PAN Jinchao⁴,
WANG Rongqiao^1,2,4

1.
Research Institute of Aero-Engine， Beijing University of Aeronautics and Astronautics，Beijing 100191，China
2.
Beijing Key Laboratory of Aero-Engine Structure and Strength， Beijing University of Aeronautics and Astronautics，Beijing 100191，China
3.
Hunan Aviation Powerplant Research Institute， Aero Engine Corporation of China，Zhuzhou Hunan 412002，China
4.
School of Energy and Power Engineering， Beijing University of Aeronautics and Astronautics，Beijing 100191，China

摘要

摘要: 发展了一种考虑微观组织的选区激光熔化（SLM）钛合金TC4小裂纹扩展数值模拟方法。基于SLM TC4的微观组织观测结果，利用Voronoi算法并通过晶体取向筛选，实现了微观组织建模。在此基础上，采用扩展有限元法建立了SLM TC4材料小裂纹扩展行为模拟方法，探究沉积方向以及晶粒尺寸、晶体取向等微观组织对小裂纹扩展速率的影响规律。结果表明：沉积方向影响材料的裂纹扩展抗力，沉积方向与裂纹扩展方向平行时，材料抵抗疲劳小裂纹扩展的性能相对更好。晶粒尺寸影响小裂纹扩展速率，晶粒尺寸越大，小裂纹扩展速率越快。晶体取向影响速率的波动性，不同晶体取向材料的小裂纹扩展速率上下界有明显差异。
- 选区激光熔化 /
- 增材制造钛合金 /
- 微观组织 /
- 小裂纹扩展 /
- 扩展有限元法
Abstract: A numerical simulation method of small crack growth in selective laser melting （SLM） titanium alloy TC4 considering microstructure was developed.Based on the microstructure observation results of SLM TC4，the microstructure modeling was realized by Voronoi diagram and crystallographic orientation screening.The extended finite element method was used to establish the simulation method for small crack growth behavior of SLM TC4 to explore the influences of buildup direction，grain size，crystallographic orientation and other microstructure on the small crack growth rate.The buildup direction affected the crack growth resistance，and the material had better resistance to fatigue small crack growth when the buildup direction was parallel to the crack growth direction.The grain size affected the small crack growth rate，the growth rate of small crack became faster with the increase of grain size.The crystallographic orientation affected the volatility of the crack growth rate，the upper and lower bounds of small crack growth rate of materials with different crystallographic orientations were obviously different.
- selective laser melting /
- additive titanium alloy /
- microstructure /
- small crack growth /
- extended finite element method

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参考文献(21)

[1]	朱知寿.新型航空高性能钛合金材料技术研究与发展[M].北京:航空工业出版社，2013.
[2]	杨占尧.增材制造与3D打印技术及应用[M].北京:清华大学出版社，2017.
[3]	巩水利，锁红波，李怀学.金属增材制造技术在航空领域的发展与应用[J].航空制造技术，2013，433（13）:66-71.
[4]	王桂荣，赵晴，许良.TC4-DT 钛合金小裂纹扩展行为研究[J].科技通报，2018，34（6）:95-100.
[5]	KUMAR P，PRAKASH O，RAMAMURTY U.Micro-and meso-structures and their influence on mechanical properties of selectively laser melted Ti-6Al-4V[J].Acta Materialia，2018，154:246-260.
[6]	WANG Zhen，WU Wenwang，QIAN Guian，et al.In-situ SEM investigation on fatigue behaviors of additive manufactured Al-Si10-Mg alloy at elevated temperature[J].Engineering Fracture Mechanics，2019，214:149-163.
[7]	ZHUANG Zhao，JING Chen，HUA Tan，et al.In situ tailoring microstructure in laser solid formed titanium alloy for superior fatigue crack growth resistance[J].Scripta Materialia，2020，174:53-57.
[8]	WU Yanzeng，BAO Rui，ZHANG Shaoqin.In-situ measurement of near-tip fatigue crack displacement variation in laser melting deposited Ti-6.5Al-3.5Mo-1.5Zr-0.3Si titanium alloy[J].Procedia Structure Integrity，2018，13:890-895.
[9]	KUMAR P，RAMAMURTY U.Microstructural optimization through heat treatment for enhancing the fracture toughness and fatigue crack growth resistance of selective laser melted TI-6AL-4V alloy[J].Acta Materialia，2019，169:45-59.
[10]	QIAN Guian,JIAN Zhimo,PAN Xiangnan,et al.In-situ investigation on fatigue behaviors of Ti-6Al-4V manufac tured by selective laser melting[EB/OL].[2020-10-05].https:∥doi.org/10.1016/j.ijfatigue.2019.105424.
[11]	XU Kang,LI Baochuan,LI Simeng,et al.In-situ obser vation for the fatigue crack growth mechanism of 316L stainless steel fabricated by laser engineered net shaping[EB/OL].[2020-10-05]https:∥doi.org/10.1016/j.ijfatigue.2019.105272.
[12]	MICHAEL W,KEVIN W,RITWIK B,et al.Small fa tigue crack growth behavior of Ti-6Al-4V produced via selective laser melting:in situ characterization of a 3D crack tip interactions with defects[EB/OL].[2020-10-05].https:∥doi.org/10.1016/j.ijfatigue.2019.105424.
[13]	SIMONELLI M，TSE Y Y，TUCK C.Effect of the build orientation on the mechanical properties and fracture modes of SLM Ti-6Al-4V[J].Materials Science and Engineering A，2014，616:1-11.
[14]	赵仁亮.基于voronoi图的空间关系计算研究[D].长沙:中南大学，2002.
[15]	司良英.FCC金属冷加工织构演变的晶体塑性有限元模拟[D].沈阳:东北大学，2009.
[16]	杨平.电子背散射衍射技术以及应用[M].北京:冶金工业出版社，2007.
[17]	LEUDERS S，THONE M，RIEMER A，et al.On the mechanical behaviour of titanium alloy TiAl6V4 manufactured by selective laser melting:fatigue resistance and crack growth performance[J].International Journal of Fatigue，2013，48:300-307.
[18]	庄茁，柳占立，成斌斌，等.扩展有限单元法[M].北京:清华大学出版社，2012.
[19]	HU Dianyin,PAN Jinchao,MAO Jianxing,et al.An aniso tropic mesoscale model of fatigue failure in a titanium alloy containing duplex microstructure and hard α inclusions[EB/OL].[2020-10-06].https:∥doi.org/10.1016/j.matdes.2020.108844.
[20]	HBERGARE A，DORADO J I，MARTIN-MEIZOSO A，et al.Fatigue crack propagation in complex stress fields:experiments and numerical simulations using the extended finite element method （XFEM）[J].International Journal of Fatigue，2017，103:112-121.
[21]	何龙龙，刘志芳，顾俊杰，等.基于XFEM的疲劳裂纹扩展路径和寿命预测[J].西北工业大学学报，2019，37（4）:737-743.