The Structure of Nb Obtained by Severe Plastic Deformation and Its Thermal Stability

摘要：

Evolution of structure of Nb subjected to high-pressure torsion (HPT) with various strain at cryogenic and room temperatures and further annealing in the temperature range of 100-700℃ has been studied by transmission electron microscopy (TEM) and microhardness measurements. HPT in liquid nitrogen enables to obtain true nanocrystalline structure with crystallite sizes of about 75 nm and the recordbreaking microhardness of 4800 MPa. The thermal stability of the structure obtained is analysed.

作者: V.V.Popov E.N.Popova A.V.Stolbovsky V.P.Pilyugin

作者单位: Institute of Metal Physics,Ural Division of Russian Academy of Sciences,RU620990,S.Kovalevskaya Str.,18,Ekaterinburg,Russia

会议类型: 国际会议

会议名称: 5th International Conference on Nanomaterials by Severe Plastic Deformation(第五届剧烈塑性变形纳米材料国际会议)

会议地点: 南京

会议语种:英文

页码: 409-414

在线出版日期: 2011-03-01（万方平台首次上网日期，不代表论文的发表时间）