摘要
采用光学显微镜(OM)、扫描电镜(SEM)等表征手段,结合拉伸试验及冲击试验,系统研究了不同淬火介质(油、水、5%、10%和15%浓度NaCl水溶液)对1Cr17Ni2马氏体不锈钢调质处理(1030℃×80 min+500℃×80 min)后组织演变及力学性能的影响。结果表明,不同淬火介质处理试样的显微组织均由回火马氏体基体、弥散分布的细小碳化物及少量高温铁素体构成,其中NaCl水溶液淬火试样的马氏体板条更细小。与传统油淬相比,NaCl水溶液淬火试样的强度更高,但冲击性能较差。当采用15%NaCl水溶液作为淬火介质时,力学性能数据离散度显著降低,1Cr17Ni2钢表现出更优异的性能稳定性。
Effects of different quenchants(oil,water,5%,10%and 15%NaCl aqueous solutions)on microstructural evolution and mechanical properties of 1Cr17Ni2 martensitic stainless steel after quenching and tempering treatment(1030℃×80 min+500℃×80 min)were systematically investigated by using characterization techniques such as optical microscope(OM)and scanning electron microscope(SEM),combined with tensile and impact tests.The results indicate that the microstructure of the specimens treated with different quenchants consists of tempered martensite matrix,fine dispersed carbides and a small amount of high-temperature ferrite.Among these,the specimens quenched in NaCl aqueous solutions exhibit finer martensite laths.Compared with conventional oil quenching,the specimens quenched in NaCl aqueous solutions demonstrate higher strength but inferior impact toughness.When a 15%NaCl aqueous solution is used as the quenchant,the scatter in mechanical properties data is significantly reduced,indicating more excellent performance stability of the 1Cr17Ni2 steel.
作者
王军
李智勇
巢昺轩
王豪
郭楠
应俊龙
张韶佳
Wang Jun;Li Zhiyong;Chao Bingxuan;Wang Hao;Guo Nan;Ying Junlong;Zhang Shaojia(Changhe Aircraft Industry(Group)Co.,Ltd.,Jingdezhen Jiangxi 333000,China;School of Materials Science and Engineering,Chongqing University,Chongqing 400044,China)
出处
《金属热处理》
北大核心
2026年第1期95-102,共8页
Heat Treatment of Metals
基金
2024年昌河飞机工业(集团)有限责任公司揭榜挂帅项目(41082-24)。
