By straingauging, fatigue life tests and theoretic analysis it is shown that for the U type bellow of stainless steel ln the low-cycle fatigue range, 1050C anneal dose not reduce its fatique life.

• 通过应变测试、疲劳寿命试验及相应的理论分析证实，不锈钢U形波纹管在低循环疲劳范畴，经1050C退火处理不会降低疲劳寿命。