CAS OpenIR  > 中科院上海应用物理研究所2011-2018年
Finite Element Simulation of the Temperature Field and Residual Stress in GH536 Superalloy Treated by Selective Laser Melting
Wen, S; Dong, AP; Lu, YL; Zhu, GL; Shu, D; Sun, BD
2018
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume54Issue:3Pages:393-403
Subtype期刊论文
AbstractIn the aerospace industry, due to the increasing hardness and tensile strength of nickel-based superalloys, the traditional manufacturing methods are difficult to produce, which limits the freedom of part design and process. Selective laser melting (SLM) has great potential in this field with its additive manufacturing concept and full melting during the process. Although the dense part can be easily obtained in SLM, the residual stresses and micro-cracks in the machining process still affect the dimensional accuracy and reliability of the parts. In SLM process, rapid and complex changes of temperature and stress are observed in the vicinity of the molten pool. Understanding these changes will help to improve the quality of the process. In this work, a finite element model (FEM) is established to calculate the temperature and residual stress distribution near the weld pool during the SLM of Hastelloy X superalloy, The model uses a composite Gauss heat source to consider the influence of optical penetration depth, and implements the transformation of powder, molten pool and solid metal by changing the material properties with temperature. Comparison with the test results shows that the model can simulate the distribution of temperature field and the residual stress in SLM process well. The simulation results show that with the increase of laser power, the width, length and depth of melting pool were enlarged, the cooling rate decreases; with the increase of the scanning speed, the width and depth of melting pool decreases, the length remained unchanged, the cooling rate increase. After cooling, there is a large tensile stress on the surface of the model. As the depth increases, the tensile stress decreases rapidly and eventually becomes compressive stress.
KeywordParametric Analysis Powder Alloy Model Microstructure Reduction Specimens Behavior
DOI10.11900/0412.1961.2017.00284
Indexed BySCI
Language英语
WOS IDWOS:000427121400005
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/29021
Collection中科院上海应用物理研究所2011-2018年
Affiliation1.Wen, S
2.Dong, AP
3.Lu, YL
4.Zhu, GL
5.Shu, D
6.Sun, BD
Recommended Citation
GB/T 7714
Wen, S,Dong, AP,Lu, YL,et al. Finite Element Simulation of the Temperature Field and Residual Stress in GH536 Superalloy Treated by Selective Laser Melting[J]. ACTA METALLURGICA SINICA,2018,54(3):393-403.
APA Wen, S,Dong, AP,Lu, YL,Zhu, GL,Shu, D,&Sun, BD.(2018).Finite Element Simulation of the Temperature Field and Residual Stress in GH536 Superalloy Treated by Selective Laser Melting.ACTA METALLURGICA SINICA,54(3),393-403.
MLA Wen, S,et al."Finite Element Simulation of the Temperature Field and Residual Stress in GH536 Superalloy Treated by Selective Laser Melting".ACTA METALLURGICA SINICA 54.3(2018):393-403.
Files in This Item: Download All
File Name/Size DocType Version Access License
Finite Element Simul(4380KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wen, S]'s Articles
[Dong, AP]'s Articles
[Lu, YL]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wen, S]'s Articles
[Dong, AP]'s Articles
[Lu, YL]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wen, S]'s Articles
[Dong, AP]'s Articles
[Lu, YL]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Finite Element Simulation of the Temperature Field and Residual Stress in GH536 Superalloy Treated by Selective Laser Melting.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.