The mechanical properties required for metallic materials in most structural applications rarely can be achieved in pure metals and are generally attained through the addition of alloying elements. Traditionally, metallic alloys have consisted of a dominant element, such as iron in steels, to which small amounts of alloying elements are added, for example, carbon for strength. High-entropy alloys (HEAs) represent a new field of metallurgy that focuses attention away from the corners of alloy phase diagrams towards their centres, thereby enabling numerous new materials. One of the most notable HEAs to date, CrMnFeCoNi, is a case in point and it has a strong dependence of the strength with the decrease of temperature. We propose to study this material at 7K to explore its application in relevant industry and the scientific mechanism behind this behavior.