scispace - formally typeset
Search or ask a question
Author

Jiaan Liu

Other affiliations: Chinese Ministry of Education
Bio: Jiaan Liu is an academic researcher from Jilin University. The author has contributed to research in topics: Composite number & Ultimate tensile strength. The author has an hindex of 14, co-authored 40 publications receiving 588 citations. Previous affiliations of Jiaan Liu include Chinese Ministry of Education.

Papers
More filters
Journal ArticleDOI
Sirong Yu1, Jiaan Liu1, Ming Wei1, Yanru Luo1, Xianyong Zhu1, Yaohui Liu1 
TL;DR: In this article, the compressive property and energy absorption characteristic of ZA22 foams were investigated and the relation between the relative plastic collapse stress and relative density can be described with Gibson and Ashby's model.

60 citations

Journal ArticleDOI
TL;DR: In this article, the compressive behavior and damping properties of ZA22/SiC p composite foams were investigated and it was shown that SiC particles dispersing in cell walls can alter the deformation mechanism of Za22 foams.
Abstract: The ZA22 alloy composite foams reinforced by 10 vol.% SiC particles (ZA22/SiC p composite foams) were fabricated with the melt foaming route using CaCO 3 blowing agent in this paper. The compressive behavior and damping property of the composite foams were investigated. The results show that SiC particles dispersing in cell walls can alter the deformation mechanism of ZA22 foams. The plateau stress of the composite foams, therefore, fluctuated continually. The damping properties of ZA22/SiC p composite foams are obviously higher than those of ZA22 alloy and ZA22 foams. The addition of SiC particles can improve the damping capacity of ZA22 foams because SiC particles introduce multifarious interfaces and high-density dislocations in composite foams.

56 citations

Journal ArticleDOI
TL;DR: In this paper, an efficient method is demonstrated to synthesize reduced graphene oxide/CoO nanowires (rGO/coO) mutually-supporting porous structure, which is in situ prepared by annealing self-assembled graphene oxide (GO)/Co(CO 3 ) 0.5 (OH)·0.11H 2 O nanowire composite in N 2 atmosphere.

55 citations

Journal ArticleDOI
TL;DR: In this paper, the static and dynamic compressive behaviors of the composite foams were investigated utilizing CMT5205 electron universal testing machine and a Split Hopkinson pressure bar system, respectively.
Abstract: The AlSi 9 Mg composite foams reinforced by SiC particles (SiC p /AlSi 9 Mg composite foams) were fabricated with the direct foaming route of melt using CaCO 3 blowing agent. The static and dynamic compressive behaviors of the composite foams were investigated utilizing CMT5205 electron universal testing machine and a Split Hopkinson Pressure Bar system, respectively. The experimental results show that the yield stress of SiC p /AlSi 9 Mg composite foams increases with increasing strain rate, the strain hardening occurs during the compression at high strain rate, and SiC p /AlSi 9 Mg composite foams is more sensitive to the strain rate than Al and Al alloy foams. The yield stress of SiC p /AlSi 9 Mg composite foams with different volume fractions of SiC particles at high strain rate increases with the increase of the volume fraction of SiC particles.

45 citations

Journal ArticleDOI
TL;DR: In this paper, fly ash cenospheres with average size of 100μm were added to the molten AZ91D magnesium alloy to prepare in situ Mg 2 Si/AZ91D composites by means of compo-casting.

41 citations


Cited by
More filters
Journal ArticleDOI
TL;DR: The history of metallic foams and the key innovations that have led to the variety of processing methods known today are reviewed in this article, where it is evident that the idea of foaming metals is very old and that most of the techniques used today have been proposed already in the 1950s.
Abstract: The history of metallic foams and the key innovations that have led to the variety of processing methods known today are reviewed. It is evident that the idea of foaming metals is very old and that most of the techniques used today have been proposed already in the 1950s. The most important milestones in the development of foaming technologies and the some of the attempts to commercialise metal foams are reviewed.

267 citations

Journal ArticleDOI
TL;DR: In this paper, the authors present a review on the state-of-the-art in the utilization of industrial and agricultural waste materials for the development of metal-matrix composites (MMCs), providing an insight into the challenges and opportunities for the exploitation to their full potential.
Abstract: In this contribution, authors present a review on the state-of-the-art in the utilization of industrial and agricultural waste materials for the development of metal–matrix composites (MMCs), providing, through the judicious analysis of an ample and varied references source – from the oldest to the newest ones – an insight into the challenges and opportunities for the exploitation to their full potential. In addition to its topicality, the novelty of this contribution lies in the presentation of key statistical, technical, and property-related information of a comprehensive variety of waste materials classed into two main groups, namely, fly ash reinforced MMCs and MMCs derived from other waste materials. Although fly ash has been exploited in a broad range of applications, the attention paid for its use in the development of MMCs seems to be insufficient. A purposely designed chart helped to pinpoint the more demanding and profitable applications of fly ash, and establish strategic opportunity ar...

158 citations

Journal ArticleDOI
TL;DR: In this paper, a foam-filled corrugated core sandwich panel was evaluated under quasi-static out-of-plane compression and the underlying mechanisms were numerically studied using finite element simulations.

154 citations

Journal ArticleDOI
11 Feb 2021-ACS Nano
TL;DR: In this article, the advantages and challenges of various prelithiation methods for compensating the initial irreversible capacity of the anode have been systematically summarized and analyzed, providing enlightenment for the further development of each pre lithiation strategy toward commercialization and thus facilitating the practical application of high-specific-capacity anodes in the next generation high-energy-density lithium-ion batteries.
Abstract: With the urgent market demand for high-energy-density batteries, the alloy-type or conversion-type anodes with high specific capacity have gained increasing attention to replace current low-specific-capacity graphite-based anodes. However, alloy-type and conversion-type anodes have large initial irreversible capacity compared with graphite-based anodes, which consume most of the Li+ in the corresponding cathode and severely reduces the energy density of full cells. Therefore, for the practical application of these high-capacity anodes, it is urgent to develop a commercially available prelithiation technique to compensate for their large initial irreversible capacity. At present, various prelithiation methods for compensating the initial irreversible capacity of the anode have been reported, but due to their respective shortcomings, large-scale commercial applications have not yet been achieved. In this review, we have systematically summarized and analyzed the advantages and challenges of various prelithiation methods, providing enlightenment for the further development of each prelithiation strategy toward commercialization and thus facilitating the practical application of high-specific-capacity anodes in the next-generation high-energy-density lithium-ion batteries.

150 citations

Journal ArticleDOI
TL;DR: To refine grains and obtain good mechanical properties, the effects of pulse frequency on the macrostructure, microstructure and tensile properties are investigated and results indicate that pulse frequency can result in the change of weld pool oscillations and cooling rate.
Abstract: Wire arc additive manufacturing (WAAM) offers a potential approach to fabricate large-scale magnesium alloy components with low cost and high efficiency, although this topic is yet to be reported in literature. In this study, WAAM is preliminarily applied to fabricate AZ31 magnesium. Fully dense AZ31 magnesium alloy components are successfully obtained. Meanwhile, to refine grains and obtain good mechanical properties, the effects of pulse frequency (1, 2, 5, 10, 100, and 500 Hz) on the macrostructure, microstructure and tensile properties are investigated. The results indicate that pulse frequency can result in the change of weld pool oscillations and cooling rate. This further leads to the change of the grain size, grain shape, as well as the tensile properties. Meanwhile, due to the resonance of the weld pool at 5 Hz and 10 Hz, the samples have poor geometry accuracy but contain finer equiaxed grains (21 μm) and exhibit higher ultimate tensile strength (260 MPa) and yield strength (102 MPa), which are similar to those of the forged AZ31 alloy. Moreover, the elongation of all samples is above 23%.

137 citations