Superplasticity in Advanced Materials最新文献

Improved stochastic dissimilar diffusion bonding model with experimental validation 改进的随机异种扩散键合模型，并进行了实验验证

Superplasticity in Advanced Materials Pub Date : 2023-07-10 DOI: 10.21741/9781644902615-39

Bryan Ferguson, Neha Kulkarni, D. G. Sanders, E. Bol, M. Ramulu

引用次数: 0

Formation mechanism and elimination method for surface groove of the hollow lattice structure by superplastic forming 超塑性成形中空晶格结构表面沟槽的形成机理及消除方法

Superplasticity in Advanced Materials Pub Date : 2023-07-10 DOI: 10.21741/9781644902615-15

Yanhong Mu, Zhiqiang Li, Bing Zhao, Feng Yang, Ning Zhang, Lihua Du, Yong Li

{"title":"Formation mechanism and elimination method for surface groove of the hollow lattice structure by superplastic forming","authors":"Yanhong Mu, Zhiqiang Li, Bing Zhao, Feng Yang, Ning Zhang, Lihua Du, Yong Li","doi":"10.21741/9781644902615-15","DOIUrl":"https://doi.org/10.21741/9781644902615-15","url":null,"abstract":"Abstract. The titanium alloy hollow lattice structures can be widely applied on the advanced aircrafts due to their excellent mechanical properties and light weight. Superplastic forming and diffusion bonding (SPF/DB) process is an advanced process to manufacture these hollow lattice structures with two outer plates and one inner hollow plate. To further decrease the weight of the structures, thinner outer plate is preferred when compared with the inner plate, however, it would result in the occurrence of surface groove at the intersects between the outer plate and the hollow stiffener during superplastic forming process, leading to the failure of the structures. In this paper, the formation characteristics of the surface groove and the influence of the outer/inner sheet thicknesses on the occurrence of surface grooves was investigated through a well-developed finite element model. Furthermore, an innovative method was presented to eliminate the surface groove during SPF/DB, which makes use of double-sided dynamically adjusted gas pressure on the inner and outer of the plate during superplastic forming process. Based on the developed numerical models, the effects of assistant outer gas pressure parameters on groove formation have been investigated. The effectiveness of the proposed new forming method and the optimized parameters have been validated by performing a SPF/DB forming tests of a typical lattice structures. The method developed in this study provides a new way to improve the forming quality and accuracy of hollow parts by SPF/DB.","PeriodicalId":242571,"journal":{"name":"Superplasticity in Advanced Materials","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124638180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Consolidation of AZ31 magnesium chips using equal channel angular pressing 等通道角压AZ31镁片的固结

Superplasticity in Advanced Materials Pub Date : 2023-07-10 DOI: 10.21741/9781644902615-24

Majid Al-Maharbi, Almundher Al-Namani

引用次数: 0

Deformation behaviour and microstructural evolution of high-entropy CoFeMnNi alloy at hot deformation condition with low strain rate 高熵CoFeMnNi合金在低应变率热变形条件下的变形行为及显微组织演变

Superplasticity in Advanced Materials Pub Date : 2023-07-10 DOI: 10.21741/9781644902615-29

Lihua Du, Jiaai Shi, Jiayu Liang, Kailun Zheng

引用次数: 0

Predicting ECAP misorientation evolution and its influence on superplasticity for an Al-Zn-Mg-Cu alloy Al-Zn-Mg-Cu合金ECAP错取向演化及其对超塑性的影响

Superplasticity in Advanced Materials Pub Date : 2023-07-10 DOI: 10.21741/9781644902615-21

F. Carreño

{"title":"Predicting ECAP misorientation evolution and its influence on superplasticity for an Al-Zn-Mg-Cu alloy","authors":"F. Carreño","doi":"10.21741/9781644902615-21","DOIUrl":"https://doi.org/10.21741/9781644902615-21","url":null,"abstract":"Abstract. Extensive research on severe plastic deformation (SPD) of metallic materials has been performed so far in order to improve mechanical properties, both at low and high temperatures. As a result of the extensive grain refinement obtained, increased superplastic behaviour has been attained at higher strains rates and lower temperatures than usual. This is due to finer grain sizes and higher average misorientations obtained, which enhance grain boundary sliding (GBS). However, the misorientation effect on superplasticity, and the prediction of misorientation evolution during SPD has remained so far, qualitative. In this research, especial attention has been given to the quantitative misorientation evolution with increasing equal channel angular pressing (ECAP) deformation, in order to propose an expression useful to describe and predict the influence of the different processing parameters on the misorientation evolution with strain. This is exemplified for ECAPed Al-Zn-Mg-Cu and other aluminium alloys, and it could serve as a basis for predicting the misorientation evolution, and its influence on superplasticity, of other SPD processes and metallic alloys.","PeriodicalId":242571,"journal":{"name":"Superplasticity in Advanced Materials","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130914120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Texture and strain rate sensitivity analysis of solid solution and precipitation hardening aluminum alloys processed by repetitive corrugation and straightening 反复波纹矫直加工固溶与析出硬化铝合金织构及应变率敏感性分析

Superplasticity in Advanced Materials Pub Date : 2023-07-10 DOI: 10.21741/9781644902615-41

S. Elizalde, Marco Ezequiel, L. Romero-Resendiz, José María Cabrera, Gonzalo González

{"title":"Texture and strain rate sensitivity analysis of solid solution and precipitation hardening aluminum alloys processed by repetitive corrugation and straightening","authors":"S. Elizalde, Marco Ezequiel, L. Romero-Resendiz, José María Cabrera, Gonzalo González","doi":"10.21741/9781644902615-41","DOIUrl":"https://doi.org/10.21741/9781644902615-41","url":null,"abstract":"Abstract. The potential of improving the mechanical strength by the RCS process is evaluated on the 5754, 6061, and 7075 aluminum alloys, which present different hardening mechanisms related to their respective alloying elements. This work compares the evolution of the texture and the mechanical properties of the different alloys through the RCS processing. The mechanical properties were evaluated by micro-hardness measurements, tensile tests at different temperatures, and strain rates to evaluate the strain-rate sensitivity. The results showed that after two RCS passes, the 6061 and 5754 alloys showed a relatively high strain-rate sensitivity at 300°C. In addition, an increment of 27%, 22%, 15% in hardness was obtained for the 5754, 6061 and 7075 alloys, respectively. Showing the potential of improvement in the mechanical resistance due to the different hardening mechanism. Furthermore, the crystallographic texture was characterized by the obtention of pole figures by X-ray diffraction and the calculation of their orientation distribution functions. The results showed the same trend in the three aluminum alloys, i.e., the initial texture components were conserved, but the texturized volume decreased.","PeriodicalId":242571,"journal":{"name":"Superplasticity in Advanced Materials","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130471705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In-situ neutron and synchrotron methods for the investigation of plastic deformation and annealing in metals 原位中子和同步加速器研究金属塑性变形和退火的方法

Superplasticity in Advanced Materials Pub Date : 2023-07-10 DOI: 10.21741/9781644902615-3

K. Liss

引用次数: 0

Secondary phase precipitation in ultrafine-grained superduplex stainless steels 超细晶粒超双相不锈钢中的次生相析出

Superplasticity in Advanced Materials Pub Date : 2023-07-10 DOI: 10.21741/9781644902615-25

A. Biserova-Tahchieva, N. Llorca-Isern, Jose Maria Cabrera

引用次数: 0

Precise forming of Ti60 alloy by superplastic forming /diffusion bonding Ti60合金的超塑性成形/扩散连接精密成形

Superplasticity in Advanced Materials Pub Date : 2023-07-10 DOI: 10.21741/9781644902615-8

Shaosong Jiang, Liangwei Kang, Li Yang

引用次数: 0

Numerical simulation and experimental trials on superplastic forming for thin-walled structure of Ti2AINb alloy Ti2AINb合金薄壁组织超塑性成形的数值模拟与实验研究

Superplasticity in Advanced Materials Pub Date : 2023-07-10 DOI: 10.21741/9781644902615-9

Ning Zhang, Yaoqi Wang, Yanhong Mu, LI Zhen

{"title":"Numerical simulation and experimental trials on superplastic forming for thin-walled structure of Ti2AINb alloy","authors":"Ning Zhang, Yaoqi Wang, Yanhong Mu, LI Zhen","doi":"10.21741/9781644902615-9","DOIUrl":"https://doi.org/10.21741/9781644902615-9","url":null,"abstract":"Abstract. The difficult formability of Ti2AlNb alloy leads to the difficulty of traditional manufacturing methods to form the complex thin-walled components, limiting the wide application of Ti2AlNb alloy in aerospace. In this paper the superplastic forming process of Ti2AINb alloy with thin-walled structure was studied. The superplastic tensile tests of Ti2AINb alloy were carried out at varying temperature ranging from 920℃ to 980℃ and strain rate ranging from 0.001s-1 to 0.03s-1. The effect of the deformation-temperature and strain rate on the superplastic deformation behaviour was analysed, showing that the flow stress and elongation increase with the increasing temperature and the flow stress decreases, the elongation increases with the decrease of the strain rate. The elongation reaches the maximum value of 525% at the temperature of 940℃ and the strain rate of 0.001s-1. The constitutive equation taking into account the effect of strain was developed, which was implemented into the FE-based software Abaqus to simulate the superplastic forming of the thin-walled structure. The optimal values of the slab thickness and loading pressure-time curve were obtained by simulation and the superplastic forming tests of thin-walled structure were performed. The comparison between the numerical and experimental data with regard to thickness variation verified the accuracy of the finite element model. The research results provide a reference basis for the preparation of complex thin-walled structures of Ti2AINb alloy in aerospace.","PeriodicalId":242571,"journal":{"name":"Superplasticity in Advanced Materials","volume":"218 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116044330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0