文献类型：期刊文献

英文题名：Evaluation of the ductile-brittle transition temperature of anisotropic materials by small punch test with un-notched and U-notched specimens

作者：Guan, Kaishu[1];Wang, Duwei[1];Dobrovska, Jana[2];Matocha, Karel[2]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Safety Sci Pressurized Syst, Meilong Rd 130, Shanghai 200237, Peoples R China;[2]VSB Tech Univ Ostrava, Fac Met & Mat Engn, Ostrava, Czech Republic

年份：2019

卷号：102

起止页码：98

外文期刊名：THEORETICAL AND APPLIED FRACTURE MECHANICS

收录：;EI(收录号：20191606793986);WOS:【SCI-EXPANDED(收录号:WOS:000480512300010)】；

基金：The authors of this paper would like to express their Acknowledgement to Natural Key R&D program of China (2018YFC0808800) for the funding.

语种：英文

外文关键词：Small punch test; Low temperature; Ductile-brittle transition temperature; U-notch grooves specimens; Anisotropy

摘要：Small punch test (SPT) was conducted to investigate the mechanical properties of A350 steel in low temperatures. Un-notched and U-shaped specimens of the A350 steel were cut from the axial, circumferential and radial directions. And their ductile-brittle transition temperature and upper plateau impact energy were determined. No significant difference was observed in the upper plateau impact energy and ductile-brittle transition temperature of the steel according to the obtained results of the analyzed three different directions of the un-notch specimens. In contrast to the un-notch steel specimens, the upper plateau fracture energy of the three different directions of the material was determined using the U-notched specimens. This observation was in agreement with the results obtained by the Charpy impact test and confirms that the SPT using U-shaped notch specimens is a more reliable technique to evaluate the mechanical properties of anisotropy materials.