CAJ | 학술논문

低碳微合金强化的贝氏体钢具备较高的强韧性及优良的低温韧性。通过对试验用钢的焊接工艺研究，分析了三种线能量条件下焊接接头焊缝、热影响区的组织与性能。结果表明，在线能量达到28.8 kJ/cm焊接条件下，这种700 MPa级别的钢材能够获得组织均匀、力学性能满足要求的焊接接头。
저탄미합금강화적패씨체강구비교고적강인성급우량적저온인성。통과대시험용강적한접공예연구，분석료삼충선능량조건하한접접두한봉、열영향구적조직여성능。결과표명，재선능량체도28.8 kJ/cm한접조건하，저충700 MPa급별적강재능구획득조직균균、역학성능만족요구적한접접두。
Low carbon bainitic steel is provided with high strength and excellent low temperature toughness. According to the welding procedure qualification tests,the microstructure and mechanical properties of the welding joints under three heat input conditions are analyzed . The results show that the steel is provided with homogeneous microstructure and high mechanical properties when the heat input reaches up to 28.8kJ/cm.