한국주조공학회지 (Journal of Korea Foundry Society)
- 제20권5호
- /
- Pages.307-315
- /
- 2000
- /
- 1598-706X(pISSN)
- /
- 2288-8381(eISSN)
HSLA 주강의 기계적 성질에 미치는 첨가원소의 영향
Effects of Additional Elements of the Mechanical Properties of HSLA Cast Steels
- Park, Jai-Hyun (Research Institute of Industrial Science & Technology) ;
-
Kim, In-Bae
(Department of Metallurgical Eng., Pusan National University)
- 발행 : 2000.10.20
초록
The effects of additional elements on the mechanical properties of HSLA cast steels such as hardness, tensile strength and charily impact energy have been investigated. Test results showed the mechanical properties of HSLA cast steels were superior to those of C-Mn cast steels. In case of the HSLA cast steels, HSLA cast steels with all addition of Nb, V, and Ti had more excellent tensile strength than those with individual addition of Nb, V, or Ti. The tensile strengths of HSLA cast steels were increased as the Mo contents were increased from 0.25% to 0.5%. These are attributed to the solution hardening and the change of the precipitation kinetics of NbC due to increased Mo contents. The tensile strength of HSLA cast steel was remarkablely increased as the manganese contents were increased from 0.65% to 1.2% and 1.5%, respectively. However, the optimum composition of HSLA cast steels to obtain the best compromise between tensile strength and charily impact energy compared to C-Mn cast steel was the additions of0.1% C and 1.2% Mn.
키워드