王晓,王作成,王协彬,李显达,高俊庆,赵修领,董昌兴

• 1:山东大学材料液固结构演变与加工教育部重点实验室
• 2:山东大学材料科学与工程学院
• 3:莱芜钢铁股份有限公司

摘要(Abstract)：

为了进一步降低硼镍复合添加的含铌低合金高强度(HSLA)H型钢的韧脆转变温度。将试验钢在910℃淬火后,分别在550、600和650℃回火2 h,通过拉伸试验和夏比冲击试验对其力学性能,特别是低温冲击韧性进行了测试,使用XRD、SEM、HRTEM以及EDS对其组织和成分进行了分析。结果表明:淬火回火处理后,试验钢具有优异的强韧性配合,其韧脆转变温度降低到-70℃以下,并且-90℃时的冲击功仍在100 J左右;回火后韧性的提高主要是基体回复、再结晶的结果;回火时析出的成分复杂的碳化物有利于抑制再结晶晶粒的长大,使组织细化,细小弥散的非连续析出碳化物对韧性影响不大。

关键词(KeyWords)： 低合金高强度H型钢;回火;力学性能;低温冲击韧性;碳化物

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 王晓,王作成,王协彬,李显达,高俊庆,赵修领,董昌兴

DOI: 10.13289/j.issn.1009-6264.2011.11.008

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