前言 超高强度钢的一个共性问题是对应力腐蚀的敏感性,并且强度越高其敏感性也越高。例如D6AC钢压力容器的水压试验表明,其屈服强度只有在130—150公斤/毫米~2时,破坏强度才能超过强度极限,而当屈服强度增加到170公斤/毫米~2时,破坏强度反而急剧下降到120公斤/毫米~2。Shank等人最早进行了水对高强钢固体火箭发动机壳体影响的研究,认为水压试验使用的水由于电化学作用能引起超高强度钢的氢致开 Foreword A common problem with ultra-high-strength steels is their sensitivity to stress corrosion and the higher the intensity, the higher their sensitivity. For example, the hydraulic test of D6AC steel pressure vessel shows that the failure strength can exceed the strength limit only when the yield strength is 130-150 kg / mm ~ 2, and the failure strength increases when the yield strength is increased to 170 kg / mm ~ 2 Sharply dropped to 120 kg / mm ~ 2. Shank et al. First studied the effect of water on the shell of high strength solid rocket motor. It is considered that the water used in hydrostatic test can cause the hydrogen induced by ultra-high strength steel due to electrochemical action