Innovative pulsed current-assisted multi-pass rolling tests were conducted on a 12-roll mill during the rolling deformation processing of SUS304 ultra-thin strips.The results show that in the first rolling pass,the ro...Innovative pulsed current-assisted multi-pass rolling tests were conducted on a 12-roll mill during the rolling deformation processing of SUS304 ultra-thin strips.The results show that in the first rolling pass,the rolling reduction rate of a conventionally rolled sample(at room temperature)is 33.8%,which can be increased to 41.5%by pulsed current-assisted rolling,enabling the formation of an ultra-thin strip with a size of 67.3μm in only one rolling pass.After three passes of pulsed current-assisted rolling,the thickness of the ultra-thin strip can be further reduced to 51.7μm.To clearly compare the effects of a pulsed current on the microstructure and mechanical response of the ultra-thin strip,ultra-thin strips with nearly the same thickness reduction were analyzed.It was found that pulsed current can reduce the degree of work-hardening of the rolled samples by promoting dislocation detachment,reducing the density of stacking faults,inhibiting martensitic phase transformation,and shortening the total length of grain boundaries.As a result,the ductility of ultra-thin strips can be effectively restored to approximately 16.3%while maintaining a high tensile strength of 1118 MPa.Therefore,pulsed current-assisted rolling deformation shows great potential for the formation of ultra-thin strips with a combination of high strength and ductility.展开更多
The force flow cooled superconducting cable-in-conduit conductor （CICC） is used in both of EAST toroidal field （TF） and poloidal field （PF） coils. The conductor consists of multi-stage NbTi superconducting cable...The force flow cooled superconducting cable-in-conduit conductor （CICC） is used in both of EAST toroidal field （TF） and poloidal field （PF） coils. The conductor consists of multi-stage NbTi superconducting cable and 1.5 mm thick square jacket. The cable is pulled through in a thin wall circular jacket and then compacted to square cross-section conductor. The jacket material is SUS316LN austenitic stainless steel seamless tubes （about 10 m each）, which is assembled by butt-welding up to 600 m. The results of the welding procedure investigation and quality assurance procedures carrying out are described in this paper.展开更多
Temple of the Three Sus,which was first established during the Yuan Dynasty,features a natural,unrestrained,and classically elegant garden architectural style.This paper discusses the multiple characteristics and mean...Temple of the Three Sus,which was first established during the Yuan Dynasty,features a natural,unrestrained,and classically elegant garden architectural style.This paper discusses the multiple characteristics and meanings of traditional architectural decorative patterns at Temple of the Three Sus from a semiotic perspective.First,it analyzes the denotative aspects of these patterns,including their stylistic forms,structural frameworks,and craftsmanship techniques.Second,the paper classifies the traditional architectural decorative patterns of the Temple of the Three Sus based on the types of sources of these patterns and interprets the implied meanings of each.Finally,the paper explores the application of these traditional decorative patterns in modern urban design,specifically in Meishan City,discussing the inheritance and innovation of these patterns in contemporary urban design and emphasizing the importance of integrating tradition with modernity.展开更多
基金This work was supported by the fund of the National Natural Science Foundation of China(51974196)Major Program of National Natural Science Foundation of China(U22A20188)+1 种基金Science and Technology Innovation Teams of Shanxi Province(202304051001025)Central Government Guides the Special Fund Projects of Local Scientific and Technological Development(YDZX20191400002149).
文摘Innovative pulsed current-assisted multi-pass rolling tests were conducted on a 12-roll mill during the rolling deformation processing of SUS304 ultra-thin strips.The results show that in the first rolling pass,the rolling reduction rate of a conventionally rolled sample(at room temperature)is 33.8%,which can be increased to 41.5%by pulsed current-assisted rolling,enabling the formation of an ultra-thin strip with a size of 67.3μm in only one rolling pass.After three passes of pulsed current-assisted rolling,the thickness of the ultra-thin strip can be further reduced to 51.7μm.To clearly compare the effects of a pulsed current on the microstructure and mechanical response of the ultra-thin strip,ultra-thin strips with nearly the same thickness reduction were analyzed.It was found that pulsed current can reduce the degree of work-hardening of the rolled samples by promoting dislocation detachment,reducing the density of stacking faults,inhibiting martensitic phase transformation,and shortening the total length of grain boundaries.As a result,the ductility of ultra-thin strips can be effectively restored to approximately 16.3%while maintaining a high tensile strength of 1118 MPa.Therefore,pulsed current-assisted rolling deformation shows great potential for the formation of ultra-thin strips with a combination of high strength and ductility.
基金The project supported by the National Meg-Science Engineering Project of the Chinese Government
文摘The force flow cooled superconducting cable-in-conduit conductor （CICC） is used in both of EAST toroidal field （TF） and poloidal field （PF） coils. The conductor consists of multi-stage NbTi superconducting cable and 1.5 mm thick square jacket. The cable is pulled through in a thin wall circular jacket and then compacted to square cross-section conductor. The jacket material is SUS316LN austenitic stainless steel seamless tubes （about 10 m each）, which is assembled by butt-welding up to 600 m. The results of the welding procedure investigation and quality assurance procedures carrying out are described in this paper.
文摘Temple of the Three Sus,which was first established during the Yuan Dynasty,features a natural,unrestrained,and classically elegant garden architectural style.This paper discusses the multiple characteristics and meanings of traditional architectural decorative patterns at Temple of the Three Sus from a semiotic perspective.First,it analyzes the denotative aspects of these patterns,including their stylistic forms,structural frameworks,and craftsmanship techniques.Second,the paper classifies the traditional architectural decorative patterns of the Temple of the Three Sus based on the types of sources of these patterns and interprets the implied meanings of each.Finally,the paper explores the application of these traditional decorative patterns in modern urban design,specifically in Meishan City,discussing the inheritance and innovation of these patterns in contemporary urban design and emphasizing the importance of integrating tradition with modernity.
