Gradient microstructure in tantalum formed under the wear track during dry sliding frictionKommel, Lembit; Põdra, Priit; Mikli, Valdek; Omranpour Shahreza, BabakWear2021 / art. 203573, 7 p. : ill https://doi.org/10.1016/j.wear.2020.203573 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS