Physical and mechanical properties of titanium after severe plastic deformation through drawing in cryogenic (77 K) environment
A comparative analysis of changes in physical and mechanical properties of pure titanium depending on degree of drawing strain e at cryogenic (77 K) temperatures and at 300 К has been done. Dependences of microhardness H<sub><i>μ</i></sub><i></i> (ε) and resistivity p(s) at 77 and 300 К have been measured for wire samples drawn at 77 and 300 K. The dependences H<sub><i>μ</i></sub><i></i> (ε) and ρ(ε) are found to be noticeably affected by wire drawing temperature, which gives an evidence that cryogenic conditions of titanium deformation are an additional optimizing factor for its properties. Fig. 1. Dependence of titanium microhardness <i>(a) </i>and electrical resistivity at 77 К <i>(6) </i>on the level of strain by wire drawing at 77 (■) and 300 К (□)