Apparatus for evaluating high-temperature creep behavior of metals, and method of evaluating the same

A method of evaluating high-temperature creep behavior of metals, the method comprising:

• a first step for preparing a sealed chamber comprising a metal tube stretchable in a length direction by a pressure of a gas;
• a second step for mounting and fixing a metal sample in the chamber;
• and
• a third step for applying a gas pressure into the chamber such that a load received when the chamber is stretched in the length direction due to the gas pressure is transmitted to the metal sample to cause tensile strain of the metal sample,
• wherein a pressure of the chamber is constantly maintained in a completely sealed state during the third step.