caa a22 4500 477122078 CHVBK 20180405111639.0 cr unu---uuuuu 170330e19960201xx s 000 0 eng 10.1007/BF03025944 doi (NATIONALLICENCE)springer-10.1007/BF03025944 Effect of strain rate on the mechanical response of a Ti3Al-Nb-Mo alloy [Elektronische Daten] [G. Gray, S. Hong, B. Marquardt] In this study, the effect of strain rate and temperature on the substructure evolution and mechanical response of a Ti3Al-Nb-Mo alloy (Ti-24.5Al-10.5Nb-l.5Mo) was investigated. The yield and flow stresses were found to decrease gradually with increasing temperature at the strain rate of 3000 s1 and no flow stress/temperature anomaly was observed. The variation of hardening behavior of Ti-24.5Al-10.5Nb-1.5Mo alloy with temperature and strain rate was found to be negligible, implying that the dynamic recovery mechanism for this alloy is rather athermal. Dynamic recovery of Ti-24.5Al-10.5Nb-l.5Mo alloy is thought to be quite difficult and slow because of its complicated dislocation core structure. Ti-24.5Al-10.5Nb-l.5Mo alloy exhibited predominantly planar dislocation debris after deformation. Following the room temperature deformation at low strain rate the majority of the dislocations were a-dislocations lying on the basal and 1storder pyramidal slip planes and the 2nd-order pyramidala/2+c slip on {1211}. Increasing the rate of deformation at room temperature to 6000 s1 resulted in the increaseda-slip on prism planes and the lessor amount of basal slip. At elevated temperatures, the substructure after high rate deformation was found to be similar to that following high rate deformation at room temperature except for an increased amount of basal slip and somewhat higher incidence of the 2nd-order pyramidal slip. The evidence of an increased amount of shearing of the βo phase was observed at elevated temperature, suggesting the decreased strength of the βo phase. Springer, 1996 Gray G. Los Alamos National Laboratory, 87545, Los Alamos, NM, USA aut Hong S. Department of Metallurgical Engineering and RASOM, Chungnam National University, 305-764, Taejon, Korea aut Marquardt B. GE Aircraft Engines, 1 Neumann Way, 45215-6301, Evendale, Ohio, USA aut Metals and Materials The Korean Institute of Metals and Materials 2/1(1996-02-01), 31-36 1598-9623 2:1<31 1996 2 12540 https://doi.org/10.1007/BF03025944 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF03025944 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gray G. Los Alamos National Laboratory, 87545, Los Alamos, NM, USA aut NATIONALLICENCE 700 1- Hong S. Department of Metallurgical Engineering and RASOM, Chungnam National University, 305-764, Taejon, Korea aut NATIONALLICENCE 700 1- Marquardt B. GE Aircraft Engines, 1 Neumann Way, 45215-6301, Evendale, Ohio, USA aut NATIONALLICENCE 773 0- Metals and Materials The Korean Institute of Metals and Materials 2/1(1996-02-01), 31-36 1598-9623 2:1<31 1996 2 12540 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer