一、前言7715C耐热钛合金主要用于航空发动机。持久极限对取材设计是一个很重要的指标。但持久性能需要通过长期的实验才能获得。而实际上不可能对各种应力,不同温度 I. Introduction 7715C heat-resistant titanium alloy is mainly used for aeroengine. The enduring limit is a very important indicator of material design. But long-term performance needs to be obtained through long-term experiments. In fact, impossible for all kinds of stress, different temperatures