PT Journal AU Lenz, M Eggeler, YM Müller, J Zenk, CH Volz, N Wollgramm, P Eggeler, G Neumeier, S Göken, M Spiecker, E TI Tension/Compression asymmetry of a creep deformed single crystal Co-base superalloy SO Acta materialia PY 2019 BP 597 EP 610 VL 166 DI 10.1016/j.actamat.2018.12.053 LA english ER