Slow stretching experimental device with high-temperature high-pressure circulating water and using method
A high temperature and high pressure, experimental device technology, applied in the field of material experimental research, can solve problems such as complex structure, troublesome maintenance, stress corrosion, etc., and achieve the effects of simple operation, low cost and stable operation
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[0072] Example 1
[0073] Slow tensile test of domestic nuclear grade 304 stainless steel in high temperature and high pressure circulating B+Li water at 300℃, 10MPa, and dissolved oxygen (DO) saturation.
[0074] The experimental material is sensitized domestic nuclear grade 304 stainless steel. The heat treatment system is 304 stainless steel in a solid solution state at 650℃ for 24 hours, followed by furnace cooling. According to ASTM E399, the processing thickness (B) of the 1 / 2T compact tensile specimen (CT specimen) is 12.5mm, the width (W) is 25mm, and the length (H) is 24mm. The surface of the 1 / 2T compact tensile specimen (CT specimen) is polished, and then fatigued in the air to produce a prefabricated 4mm long crack. Fix the sample on the fixture, tighten the autoclave, and pass the circulating solution. When the solution flows back to the water storage tank, then adjust the back pressure valve to make the pressure 10MPa, the preheater set temperature is 320°C, the au...
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