CAJ | 학술논문

研究了正火对AH36船板钢微观组织和力学性能的影响。结果表明，AH36船板钢随正火温度的升高，屈服强度和抗拉强度降低，断后伸长率和冲击韧度先升后降，力学性能的变化与位错密度和晶粒尺寸密切相关。 AH36船板钢的最佳正火温度为900℃，经900℃正火后，钢板晶粒细小均匀，异常偏析带完全被珠光体替代，断口分层现象消失，塑韧性显著改善。
연구료정화대AH36선판강미관조직화역학성능적영향。결과표명，AH36선판강수정화온도적승고，굴복강도화항랍강도강저，단후신장솔화충격인도선승후강，역학성능적변화여위착밀도화정립척촌밀절상관。 AH36선판강적최가정화온도위900℃，경900℃정화후，강판정립세소균균，이상편석대완전피주광체체대，단구분층현상소실，소인성현저개선。
The effect of normalizing on microstructure and mechanical properties of AH 36 shipbuilding plate was investigated .The results show that the yield strength and tensile strength decrease , and both the elongation and impact toughness first increase and then decrease as the normalizing temperature increases for the AH 36 shipbuilding plate , which is closely related to the dislocation density and the grain size .The most suitable normalizing temperature of AH 36 shipbuilding plate is 900 ℃at which normalizing will allow the plate to offer fine and uniform grain , pearlite replacing abnormal segregation band , lamination-free fracture and obviously improved toughness .