文献类型：期刊文献

英文题名：Study on Temper Embrittlement and Hydrogen Embrittlement of a Hydrogenation Reactor by Small Punch Test

作者：Guan, Kaishu[1];Szpunar, Jerzy A.[2];Matocha, Karel[3];Wang, Duwei[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]Univ Saskatchewan, Dept Mech Engn, Adv Mat Clean Energy, Saskatoon, SK S7N 5A9, Canada;[3]Tech Univ Ostrava, Fac Met & Mat Engn, Dept Mat Engn, VSB, 17 Listopadu 2172-15, Ostrava 70800, Czech Republic

年份：2017

卷号：10

期号：6

外文期刊名：MATERIALS

收录：;EI(收录号：20172503802258);WOS:【SCI-EXPANDED(收录号:WOS:000404415000105)】；

基金：The authors would like to express their acknowledgements to the State Bureau of Quality and Technical Supervision of China (201510070) for their financial support.

语种：英文

外文关键词：3Cr1Mo1/4V steel; small punch test; energy transition temperature; temper embrittlement; hydrogen embrittlement

摘要：The study on temper embrittlement and hydrogen embrittlement of a test block from a 3Cr1Mo1/4V hydrogenation reactor after ten years of service was carried out by small punch test (SPT) at different temperatures. The SPT fracture energy E-sp (derived from integrating the load-displacement curve) divided by the maximum load (F-m) of SPT was used to fit the E-sp/F-m versus-temperature curve to determine the energy transition temperature (T-sp) which corresponded to the ductile-brittle transition temperature of the Charpy impact test. The results indicated that the ratio of E-sp/F-m could better represent the energy of transition in SPT compared with E-sp. The ductile-to-brittle transition temperature of the four different types of materials was measured using the hydrogen charging test by SPT. These four types of materials included the base metal and the weld metal in the as-received state, and the base metal and the weld metal in the de-embrittled state. The results showed that there was a degree of temper embrittlement in the base metal and the weld metal after ten years of service at 390 degrees C. The specimens became slightly more brittle but this was not obvious after hydrogen charging. Because the toughness of the material of the hydrogenation reactor was very good, the flat samples of SPT could not characterize the energy transition temperature within the liquid nitrogen temperature. Additionally, there was no synergetic effect of temper embrittlement and hydrogen embrittlement found in 3Cr1Mo1/4V steel.