报告题目1：New
Technical Solutions in Metallurgy
报告题目2：Development of Theory and Technology of the Process of Asymmetric
Rolling as a Method of Severe Plastic Deformation
报告时间：2018年11月7日下午2:50-5:00
报告地点：中南大学新校区机电工程学院C208会议室
报告人：Prof. Alexander Pesin和A/Prof. Denis Pustovoitov，Nosov Magnitogorsk State Technical University
报告简介：
报告1：There have been no breakthroughs in ferrous metallurgy
for the last 80 years. Automation and digitalization arrived, while the actual
steel making processes saw almost no changes. Today, almost all industries
experience rapid changes. In 2018 we will see a launch of trains that can
travel as fast as1,200 km/h. In 2022 we will see aircrafts capable of flying
from London to New York in 1 hour. They already know how to grow human arms and
legs. And driverless taxis have become extremely popular. Should we be
expecting to see a major breakthrough in metallurgy any time soon? In this
lecture you will learn about this and other problems, as well as possible ways
to solve them
报告2：Severe plastic deformation (SPD) is a very effective
way to create ultrafine grain structures in metals and alloys. Nowadays many
variants of SPD techniques are available. Asymmetric cold rolling, asymmetric
cryorolling and asymmetric accumulative roll bonding are the processes, which can provide SPD. Since these processes are continuous,
they have great potential for industrial production of large-scaled materials
with ultrafine grain structure. Shear strain and accumulated strain plays a
critical role in the grain refinement of the processed materials. It is well
known that the mechanism of SPD during asymmetric rolling processes comes from
its large accumulated strain, which is composed of compressive strain and
additional shear strain. For better understanding of a maximum possible level
of accumulated strain, generated during a single-pass asymmetric rolling, it is
necessary to simulate different rolling modes. In this presentation, the
influence of process parameters on shear strain and accumulated strain during
asymmetric cold rolling, asymmetric cryorolling and asymmetric
accumulative roll bonding is analysed by FEM and discussed. Special laboratory asymmetric
rolling machine is presented.
报告人简介：
Alexander
Pesin教授于1979-1984年获得金属加工工艺本科学位，1989年获得博士学位。自1983年至今在Nosov
Magnitogorsk State Technical University工作，担任助教、讲师、副教授、教授。自1982年已经发表学术论文355篇，110个发明专利授权。
Pustovoitov
Denis副教授于2010年获得金属加工工艺博士学位。自2010年至今在Nosov
Magnitogorsk State Technical University工作，担任助教、讲师、副教授。自1982年已经发表学术论文41篇。
机电工程学院
高性能复杂制造国家重点实验室
2018年11月02日
