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About Journal
Journal:Journal of Plasticity Engineering
Establishment Year:1994
Administrator:China Association for Science and Technology
Sponsor:Chinese Mechanical Engineering Society
Publishing Period:Monthly
CN:11-3449/TG
ISSN:1007-2012
Postal Distribution Code:80-353
Tel.:010-62912592/82415079
E-mail:sxgcxb@263.net
Journal of Plasticity Engineering mainly publishes original research papers of advanced and innovative fundamental research and engineering application in the field of plastic forming and its cross-discipline.
The journal has been included in many important national and international indexing systems such as Core Journals of China, Chinese Science Citation Database(CSCD), Source Journals for Chinese Scientific and Technical Papers and Citations, RCCSE Chinese Core Academic Journals, CSAD, SCOPUS, American Chemistry Abstract(CA), Cambridge Scientific Abstracts(CSA), JST China, etc.
The purpose of Journal of Plasticity Engineering is to enliven the academic ideas, improve the academic theory, strengthen the academic communication, serve for improving the foundation level of domestic plasticity engineering and establish the status of domestic plasticity engineering in world science and technology lineup.
Identification and Treatment of Academic Misconduct
To protect the rights of readers and authors and to maintain the quality and reputation of Journal of Plasticity Engineering, the paper will be rejected and treated accordingly if it is identified as academic misconduct after strictly testing and screening in the process of publication. The specific testing and identifying process and treatment methods are as follows:
Research development of titanium matrix composites and their hot deformation technologies
LI Miao-quan;LI Lian;WANG Xiao-xiang;LIN Ying-ying;LIU Ji-xiong;LIN Hai;ZHANG Xue-min;DU Zhi-yuan;TAN Wen;Titanium matrix composites have broad application prospects in aerospace, naval and marine engineering, advanced transportation, and other fields, making them a focal and hot topic in international new material research. This paper comprehensively describes the concepts and characteristics of titanium matrix composites preparation processes represented by melting and casting, vacuum hot-pressing sintering, spark plasma sintering, and laser additive manufacturing(LAM) technologies. It systematically discusses the specific applications of forging, extrusion, rolling, and heat treatment processes in the preparation of titanium matrix composites and component manufacturing. Through analysis, it is clarified that optimizing the parameters of forging, extrusion, rolling, and heat treatment processes can significantly enhance the mechanical properties and strength-plasticity matching of titanium matrix composites. This is mainly because the hot deformation and heat treatment processes not only eliminate defects during the preparation of composites, but also simultaneously improve their strength and plasticity by adjusting the microstructure. The room temperature strength limit is increased by up to 62%,and the ultimate elongation rate is increased by up to 282.9%. The application of hot-deformed components made of titanium matrix composites reduces the structural weight of equipment components by 16% to 70%,further confirming that the service life of composites processed by deformation and heat treatment processes is significantly improved.
Research progress on TA15 titanium alloy manufactured by selective laser melting
HU Yi-fan;LIU Xiao-yan;YANG Xi-rong;YANG Yan-hui;TA15 titanium alloy is widely used in military and aerospace fields due to its excellent high-temperature strength, good thermal stability and corrosion resistance, especially for important structural components with high service temperatures and complex stress conditions, such as aircraft bulkheads, wall panels and spacecraft cabin sections. Compared with traditional processing technologies, the cumulative forming mode of additive manufacturing can better meet the manufacturing requirements of “structural and functional integration” for TA15 titanium alloy, and avoid the cost loss and potential risks caused by the assembly and welding of multiple parts. Among many additive manufacturing technologies, selective laser melting(SLM) has become the most widely used and mature technology in the research and fabrication of TA15 titanium alloy structural components due to its high forming precision and strong controllability of microstructure and properties. The research progress of SLM-fabricated TA15 titanium alloy is systematically reviewed. Based on the SLM process principle, the evolution laws of microstructure and properties of SLM-fabricated TA15 titanium alloy were analyzed from four aspects: microstructure and defects, SLM process parameters, heat treatment and numerical simulation. Finally, combined with the shortcomings of existing studies, the future development trends of additive manufacturing technology for TA15 titanium alloy were prospected.
Research on forming qualities of thin-walled tubes with welded seam by warm necking spinning
XIA Qin-xiang;LIU Jin-wei;ZHAO Jie;XIAO Gang-feng;YANG Rui;TANG Chang-wen;Thin-walled tubular containers are key core components of high-end equipment such as ships, submarines and nuclear reactors. The current manufacturing process of “middle section roll welding + end stamping + assembly welding” results in numerous circumferential welded seams in the parts, which are highly susceptible to corrosion. To address the issue of circumferential welds, it is proposed to use warm necking spinning forming technology to prepare Q195 thin-walled tubes with straight welded seam. A finite element model for the warm necking spinning of thin-walled tubes with straight welded seam was constructed. And based on this model, the damage to the welded seams and the forming qualities were studied and experimentally verified. The results indicate that increasing the feed ratio r_ρ, roller fillet radius f and forming temperature T0 can effectively suppress the cracking of straight welds.As the feed ratio r_ρ and roller fillet radius f increase, the wall thickness reduction of the warm necking spun part is improved, and the maximum roundness is increased. The thinning rate of wall thickness can be effectively reduced by increasing the forming temperature. But when the forming temperature is raised to 550 ℃, the fluctuation of the roundness distribution of the spun part intensifies and the thinning rate increases. The ideal process parameters r_ρ=12 mm, f=3 mm·r-1,T0=500 ℃ were determined, and experimental verification was carried out based on the ideal process parameters. The thin-walled tube(with a diameter-to-thickness ratio of 147) was necked down from an outer diameter of Φ220 mm to Φ5 mm, resulting in a sample with a necking coefficient of 0.023.