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PENG Qian, LI Wei jun, SHENG Zhong qi (National Key Laboratory for Nuclear Fuel and Materials, Nuclear Power Institute of China, Chengdu 610041, China). Study on the 18Cr2Ni4WA's Aging Embrittlement and the Improvements[J]. Atomic Energy Science and Technology, 2002, 36(3): 205-205. DOI: 10.7538/yzk.2002.36.03.0205
Citation: PENG Qian, LI Wei jun, SHENG Zhong qi (National Key Laboratory for Nuclear Fuel and Materials, Nuclear Power Institute of China, Chengdu 610041, China). Study on the 18Cr2Ni4WA's Aging Embrittlement and the Improvements[J]. Atomic Energy Science and Technology, 2002, 36(3): 205-205. DOI: 10.7538/yzk.2002.36.03.0205
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  • Heat treatments under different conditions are carried out on the 18Cr2Ni4WA, and the materials before and after heat treatment are aged at 300 or 350 ℃ for a period of time, their strengths and toughness are evaluated by determining HRC and impact toughness. The microstructures and fractures are investigated by SEM. The result shows that there are unstable retained austenites in the original material, the material has the tendency of aging embrittlement. These unstable phases can be eliminated by reasonable heat treatment, so the aging embrittlement can be avoided.
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