Pulsed current-assisted twelve-roll precision rolling deformation of SUS304 ultra-thin strips with exceptional mechanical properties

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外文摘要：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 67.3 μm 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 51.7 μm.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.

外文关键词：

pulsed current-assistedSUS304 ultra-thin striprolling reduction ratework-hardeningmechanical properties

作者：

Wanwan Fan、Tao Wang、Jinxiong Hou、Zhongkai Ren、Qingxue Huang、Guanghui Wu

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作者单位：

College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Yingze West Street 79,Taiyuan 030024,Shanxi Province,People's Republic of China

Engineering Research Center of Advanced Metal Composites Forming Technology and Equipment of Ministry of Education,Taiyuan University of Technology,Yingze West Street 79,Taiyuan 030024,Shanxi Province,People's Republic of China

National Key Laboratory of Metal Forming Technology and Heavy Equipment,Taiyuan University of Technology,Yingze West Street 7

College of Aeronautics and Astronautics,Taiyuan University of Technology,Yingze West Street 79,Taiyuan 030024,Shanxi Province,People's Republic of China

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基金：

fund of the National Natural Science Foundation of ChinaMajor Program of National Natural Science Foundation of ChinaScience and Technology Innovation Teams of Shanxi ProvinceCentral Government Guides the Special Fund Projects of Local Scientific and Technological Development

项目编号：

51974196U22A20188202304051001025YDZX20191400002149

出版年：

2024

DOI：

10.1088/2631-7990/ad4073

极端制造(英文)

CSTPCDEI

ISSN：

年,卷(期)：2024.6(4)