Table 2 Mechanical properties of in-situ deformed samples at RT and 15 K, including yield strength (<span class="mathjax-tex">\({\sigma }_{{YS}}\)</span>), ultimate tensile strength (<i>σ</i><sub><i>UTS</i></sub>), uniform elongation (<i>ε</i><sub><i>u</i></sub>), total elongation (<i>ε</i><sub><i>t</i></sub>), extent of strain-hardening (∆<i>σ=σ</i><sub><i>UTS</i></sub><i>−σ</i><sub><i>YS</i></sub>), and elastic modulus (E)