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STUDY ON SHAPE CORRECTION OF THE THIN PLATE OF TA15 TITANIUM ALLOY BY POST WELD HEAT TREATMENT
Li Yongkui1; Quan Chunyi2; Lu Shanping1; Jiao Qingyang2; Li Shijian2; Sun Zhonghai2
Corresponding AuthorLu Shanping(shplu@imr.ac.cn)
2016-03-11
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume52Issue:3Pages:281-288
AbstractWeld deformation of the thin-wall weldment used in fighter aircraft not only hinders its subsequent procedure of fabrication and assembling, but also reduces its fatigue strength. As a result, weld deformation shortens its service life essentially. Dustpan deformation is always produced in the thin-wall weldment after multiple pass weld. In this work, combining with the experiment, the finite element method was adopted to analysis the deformation of the thin-wall weldment by multiple-pass weld and its shape correction by post weld heat treatment. For obtaining the fundamental properties such as thermal parameters and mechanical parameters of TA15 titanium alloy, a series of experiments were conducted at room temperature and high temperatures. Additionally, creep behaviors of TA15 titanium alloy were studied at the temperatures of 500, 550, 600, 650, 700 and 750 degrees C, and the parameters of creep constitutive equations of the alloy were obtained with considering the analysis of post weld heat treatment. A thermal coupled temperature-displacement analysis for welding and post weld heat treatment was performed on a three dimensional shell model of protective grille. Experiments of multiple-pass weld and post weld heat treatment were used to testify the reliability of the finite element model of welding and post weld heat treatment. With using the reliable finite element model, the parameters of heat treatment were studied. The study indicates that, the fabrication on the crossing of structure section and fillet after fillet-wallboard weld leads the compression deformation release along the fillet, after that, the shrinkage distortion produced during spot welding of fillet-structural section mainly contributes the large dustpan deformation of the thin-wall weldment; increasing temperatures, enlarging loads and prolonging the hold time can improve the shape correction of the thin-wall weldment during post weld heat treatment, hence the guide maps of the post weld heat treatment for shape correction of the thin-wall weldment under 700 and 750 degrees C are worked out.
Keywordthin-wall part of TA15 titanium alloy weld deformation post weld heat treatment finite element method
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000372691500004
PublisherSCIENCE PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/121846
Collection中国科学院金属研究所
Corresponding AuthorLu Shanping
Affiliation1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.AVIC Shenyang Aircraft Corp, Shenyang 110034, Peoples R China
Recommended Citation
GB/T 7714
Li Yongkui,Quan Chunyi,Lu Shanping,et al. STUDY ON SHAPE CORRECTION OF THE THIN PLATE OF TA15 TITANIUM ALLOY BY POST WELD HEAT TREATMENT[J]. ACTA METALLURGICA SINICA,2016,52(3):281-288.
APA Li Yongkui,Quan Chunyi,Lu Shanping,Jiao Qingyang,Li Shijian,&Sun Zhonghai.(2016).STUDY ON SHAPE CORRECTION OF THE THIN PLATE OF TA15 TITANIUM ALLOY BY POST WELD HEAT TREATMENT.ACTA METALLURGICA SINICA,52(3),281-288.
MLA Li Yongkui,et al."STUDY ON SHAPE CORRECTION OF THE THIN PLATE OF TA15 TITANIUM ALLOY BY POST WELD HEAT TREATMENT".ACTA METALLURGICA SINICA 52.3(2016):281-288.
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