鞍钢技术2023年第3期ANGANGTECHNOLOGY专家论坛高强钢低温韧性的影响因素简析张中武12,魏兴豪!(1.哈尔滨工程大学材料科学与化学工程学院,黑龙江哈尔滨150001;2.海洋装备用金属材料及其应用国家重点实验室,辽宁鞍山114009)摘要:在高强钢中,常常使用多种强化方式来提高强度,很容易引入不利于韧性的因素,导致韧脆转变温度升高,冲击功下降。为了探寻提高冲击韧性的有效方法,增强高强钢安全服役的可靠性,从基体组织、第二相和晶界偏析三个方面总结分析了其对低温韧性的影响,期望能为解决高强钢中低温韧性较低的问题提供有效的解决思路和方法,也为高强高韧钢的设计和制备提供参考。关键词:高强钢;低温韧性;韧脆转变;韧化机制中图分类号:TG142D01:10.3969/j.issn.1006-4613.2023.03.001AnalysisonFactorsAffectingToughnessofHighStrengthSteelatLowTemperatureZHANGZhongwul2,WEIXinghao'(1.CollegeofMaterialsScienceandChemicalEngineering,HarbinEngineeringUniversity,Harbin150001,Heilongjiang,China;2.StateKeyLaboratoryofMetalMaterialforMarineEquipmentandApplication,Anshan114009,Liaoning,China)Abstract:Asfarashighstrengthsteelsconcerned,manystrengtheningmethodsarecommonlyusedtoimprovestrength,itiseasytointroduceadversefactorstothetoughness,resultingintheincreasingofductile-brittletransitiontemperaturesanddecreasingofimpactenergy.Inordertoexploreeffectivemethodsforimprovingimpacttoughnessandenhancethereliabilityofhighstrengthsteelinsafeservice,theeffectofmicrostructuresinmatrix,secondphaseandgrain-boundarysegregationintermsofthehighstrengthsteelonlowtemperaturetoughnesswassummarizedandanalyzed,hopingtoprovideeffectiveideasandsolutionsforsolvingtheproblempoortoughnessofhighstrengthsteelsatlowtemperature,andalsoprovidethereferencefordesigningandproducinghighstrengthandhightoughnesssteels.Keywords:highstrengthsteel;lowtemperaturetoughness;tough-brittletransition;tougheningmechanism高强钢在土木、机械、船舶海洋工程、管道等各个领域的应用越来越广泛[1-2]。高强钢的制造旨在实现物理和机械性能的最佳组合,包括强度、韧性和延展性。冲击韧性与抗断裂性直接相关,是高国家重点研发计划项目:2020YFE0202600国家自然科学基金(叶企孙联合基金)项目...