Tensile properties of F82H steel after aging at 400 to 650°C for 1,000 to 30,000 h
Tensile properties of F82H steel after aging at 400 to 650°C for 1,000 to 30,000 h
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F82H钢在400~650℃时效1,000~30,000 h后的拉伸性能
DOI：
10.1016/j.fusengdes.2017.04.119
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发表时间：
2017
影响因子：
1.7
通讯作者：
Akio Sagara
中科院分区：
文献类型：
--
作者：
Takuya Nagasaka;Masami Ando;Hiroyasu Tanigawa;Hideo Sakasegawa;Teruya Tanaka;Takeo Muroga;Akio Sagara
本文对F82H钢在400~650℃时效1000~3万h后进行了拉伸试验，并结合前人对10万h时效的研究，探讨了长期时效过程中拉伸性能的变化过程。400℃和500℃时效时保持抗拉强度的时效时间极限为100,000℃以上，550℃时效时为10,000℃以上，600℃时效时为3000℃，650℃时效时不超过1000℃，而所有时效后均未发现塑性退化现象。用Holloun-Jaffe参数和Lambda参数对时效过程中拉伸强度的退化以及时效前热处理前的回火进行回归分析。Lambda参数分析成功地得出了描述长期时效后的抗拉强度的主曲线。
The present study conducted tensile tests on F82H steel after aging at 400–650 °C for 1000–30,000 h, and discusses the process for change in tensile properties during the long-term aging, combined with previous study for 100,000 h aging. The limit for aging time to keep tensile strength is more than 100,000 h for 400 and 500 °C aging, 10,000 h for 550 °C, 3000 h for 600 °C, and less than 1000 h for 650 °C. While, no degradation of ductility was detected after all the aging examined. Regression analyses were performed with Hollomon-Jaffe parameter and Lambda parameter on the degradation of tensile strength during aging, and prior tempering in the heat treatment before the aging. Lambda parameter analysis successfully derived a master curve to describe the tensile strength after the long-term aging.