研究了正火处理对FAS390Q桥壳钢显微组织、强度、冲击韧性和韧脆转变温度的影响。
The effect of normalizing on microstructure, strength, impact toughness and ductile-brittle transition temperature of FAS390Q axle housing steel was studied.
结果表明，本钢X70管线钢具有高强度、高抗动态撕裂能力、高低温冲击韧性以及低韧脆转变温度。
The results indicate that the X70 pipeline steel with acicular ferrite microstructure has high strength, high toughness, low transition temperature and high dynamic tear-resistance.
对试验钢筋的应变时效敏感性、韧脆转变温度、可焊性、强度与韧性的配合进行了系统的测试和研究。
The sensibility of strain aging, ductile-brittle transit temperature, weldability, and the coordination between strength and ductility of reinforced steel bars were systematically investigated.
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