该文报导了镍基定向共晶合金AF3-116A空心铸件在高压下进行热碱脱芯的应力腐蚀试验情况。带有氧化铝型芯的铸件在试验前进行高速砂轮切割,使之存在内应力。试验在盛有31～40％(重量)氢氧化钠水溶液的高压容器内进行。最高温度为310℃。脱芯时间为5小时。试验分两组:一组在大气中进行,另 This paper reports stress corrosion testing of hot-core de-cored under high pressure for nickel-based oriented eutectic AF3-116A hollow castings. Castings with an alumina core were subjected to high-speed wheel cutting prior to testing to provide internal stresses. The test was carried out in a high-pressure vessel containing 31 to 40% by weight of sodium hydroxide aqueous solution. The maximum temperature is 310 ℃. De-core time of 5 hours. The test is divided into two groups: one in the atmosphere, and the other