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Study on wear resistant cast B-containing 1Cr18Ni9Ti stainless steel 被引量:5
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作者 Kuang Jiacai Jiang Zhiqiang +2 位作者 Zhang Shiyin Ye Chang Liu Qicheng 《China Foundry》 SCIE CAS 2009年第1期32-36,共5页
The developed 1Cr18Ni9Ti austenitic stainless steel containing 1.63 wt.%B have been characterized by X-ray diffraction(XRD),electron probe microanalyzer(EPMA),optical microscopy(OM),scanning electron microscopy(SEM),e... The developed 1Cr18Ni9Ti austenitic stainless steel containing 1.63 wt.%B have been characterized by X-ray diffraction(XRD),electron probe microanalyzer(EPMA),optical microscopy(OM),scanning electron microscopy(SEM),energy dispersive X-ray spectroscopy(EDS)and Vickers microhardness measurement.The microstructural evolution and property of high boron stainless steel after solution treatment at the temperature of 1050℃are also investigated.The results show that the main compositions of borides are Fe,Cr and B,and with small amount of Ni,Mn and C elements.Silicon is insoluble in the borides.The hardness of borides is over 1,500 HV.It has been found that borides do not decompose during solution treatment,but part of borides dissolves into the matrix. The effect of increasing the solubility of boron element in the austenitic matrix favours the hardness enhancement by 8.54%.High boron stainless steel has excellent wear resistance in corrosive environment.Lifetime of transfer pipe made of high boron-containing stainless steel is 1.5-1.8 times longer than that of boron-free 1Cr18Ni9Ti stainless steel. 展开更多
关键词 1Cr18ni9Ti austenitic stainless steel BORON BORIDE corrosive wear
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INFLUENCE OF PHASE COMPOSITION ON PITTING CORROSION RESISTANCE OF SPUTTERED COATING OF 1Cr18Ni9Ti STAINLESS STEEL 被引量:3
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作者 LIU Dacheng WANG Fuhui CAO Chunan LOU Hanyi Institute of Corrosion and Protection of Metals,Academia Sinica,Shenyang,China Wang Fuhui,Laboratory of Electrochemistry,Institute of Corrosion and Protection of Metals,Academia Sinica,Shenyang 110015,China 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 1990年第8期77-80,共4页
A series of single bcc,bcc plus fcc duplex and single fcc microcrystalline coatings of 1Cr18Ni9Ti stainless steel were prepared by using sputtering technique.The resistance against pitting corrosion was studied by mea... A series of single bcc,bcc plus fcc duplex and single fcc microcrystalline coatings of 1Cr18Ni9Ti stainless steel were prepared by using sputtering technique.The resistance against pitting corrosion was studied by measurements of pitting corrosion potentials and electrochemical noise during initiation of corrosion pits.The results show that the sputtered coatings with single bcc phase or single fcc structure are more resistant to pitting corrosion than those with bcc plus fcc duplex phase structure. 展开更多
关键词 1Cr18ni9Ti stainless steel phase composition microcrystalline coating pitting corrosion
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Mechanical Properties and Microstructure of Bionic Non-Smooth Stainless Steel Surface by Laser Multiple Processing 被引量:7
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作者 Jin-zhong Lu~(1,2) ,Chao-jun Yang~(1,2) ,Lei Zhang~(1,2),Ai-xin Feng ~(1,2) ,Yin-fang Jiang~(1,2)1.School of Mechanical Engineering,Jiangsu University,Zhenjiang 212013,P.R.China2.Jiangsu Provincial Key Laboratory for Science and Technology of Photon Manufacturing,Zhenjiang 212013,P.R.China 《Journal of Bionic Engineering》 SCIE EI CSCD 2009年第2期180-185,共6页
Laser multiple processing, i.e. laser surface texturing and then Laser Shock Processing (LSP), is a new surface processing technology for the preparation of bionic non-smooth surfaces. Based on engineering bionics, sa... Laser multiple processing, i.e. laser surface texturing and then Laser Shock Processing (LSP), is a new surface processing technology for the preparation of bionic non-smooth surfaces. Based on engineering bionics, samples of bionic non-smooth surfaces of stainless steel 0Crl 8Ni9 were manufactured in the form of reseau structure by laser multiple processing. The mechanical properties (including microhardness, residual stress, surface roughness) and microstructure of the samples treated by laser multiple processing were compared with those of the samples without LSP The results show that the mechanical properties of these samples by laser multiple processing were clearly improved in comparison with those of the samples without LSP The mechanisms underlying the improved surface microhardness and surface residual stress were analyzed, and the relations between hardness, comnressive residual stress and roughness were also presented. 展开更多
关键词 laser multiple processing laser surface texturing laser shock processing stainless steel 0Cr18ni9 MICROHARDNESS residual stress roughness
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18Ni不锈钢电阻点焊接头力学性能有限元仿真 被引量:1
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作者 余海松 余闪闪 +2 位作者 李婷 尹彦平 吕晓刚 《焊接》 北大核心 2023年第5期24-28,共5页
为了研究航空用18Ni马氏体不锈钢电阻点焊接头的剪切性能和微观组织,开展了18Ni马氏体不锈钢的电阻点焊试验和点焊接头的剪切试验,并采用有限元分析软件,仿真了点焊接头在剪切过程中的应力分布。结果表明,18Ni不锈钢电阻点焊接头的最大... 为了研究航空用18Ni马氏体不锈钢电阻点焊接头的剪切性能和微观组织,开展了18Ni马氏体不锈钢的电阻点焊试验和点焊接头的剪切试验,并采用有限元分析软件,仿真了点焊接头在剪切过程中的应力分布。结果表明,18Ni不锈钢电阻点焊接头的最大抗剪力为45.01 kN,最小抗剪力为36.87 kN;仿真结果显示,剪切过程中的应力主要集中分布在焊点处,尤其是两块试板中间的焊点位置应力最大;观察金相组织后发现,点焊接头的微观组织类似于铸造组织,粗大的柱状晶从焊缝边缘向焊缝中心生长,最终在焊缝中心形成一条明显的晶界线,同时发现,晶粒内部的组织为针状马氏体组织和残余奥氏体组织,热影响区的晶粒为等轴晶,且等轴晶的晶粒尺寸小于焊缝柱状晶的晶粒尺寸,还发现焊缝内部存在有微裂纹缺陷。 展开更多
关键词 18ni不锈钢 电阻点焊 有限元仿真 剪切性能 微观组织
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等离子弧增材制造双金属交织结构微观组织及力学性能 被引量:3
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作者 郭顺 王鹏翔 +2 位作者 周琦 朱军 顾介仁 《焊接学报》 EI CAS CSCD 北大核心 2021年第3期14-19,I0002,共7页
以18Ni高强钢和高氮奥氏体不锈钢为丝材,采用等离子弧增材制造高强钢-高氮钢双金属交织结构,通过对高强钢-高氮钢双金属交织结构的微观组织观察、显微硬度及抗拉强度等力学性能试验研究了双金属交织结构的组织转变特征及其与力学性能关... 以18Ni高强钢和高氮奥氏体不锈钢为丝材,采用等离子弧增材制造高强钢-高氮钢双金属交织结构,通过对高强钢-高氮钢双金属交织结构的微观组织观察、显微硬度及抗拉强度等力学性能试验研究了双金属交织结构的组织转变特征及其与力学性能关系.结果表明,在高氮钢区域显微组织主要为奥氏体等轴晶及树枝晶,高强钢区域为板条状马氏体.高强钢区域硬度变化范围为480~500 HV;高氮钢区域硬度变化范围为310~320 HV.拉伸试验结果表明,交织结构在x向抗拉强度均值为1092 MPa,略低于y向抗拉强度1189 MPa;x向断后伸长率均值为20.0%,与y向断后伸长率19.5%相差不大;断口呈暗灰色、明显纤维状,分布有大量的等轴韧窝,韧窝尺寸大而深,断口边缘存在明显剪切唇区,属于韧性断裂. 展开更多
关键词 增材制造 高氮奥氏体不锈钢 18ni高强钢 微观组织 力学性能
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Assessment model for tribological property of ceramic/stainless steel rubbing pairs in H_2O_2 solution
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作者 DONG CongLin YUAN ChengQing +1 位作者 LI Jian YAN XinPing 《Science China(Technological Sciences)》 SCIE EI CAS 2013年第12期3017-3023,共7页
The tribological properties of ZrO2 ceramic and 1Cr18Ni9Ti stainless steel rubbing pairs were investigated using a special tribo-tester under different concentrations of hydrogen peroxide (H2O2) solution.The compariso... The tribological properties of ZrO2 ceramic and 1Cr18Ni9Ti stainless steel rubbing pairs were investigated using a special tribo-tester under different concentrations of hydrogen peroxide (H2O2) solution.The comparison analyses of the friction coefficients,worn volume rates,worn particles and surface roughness were conducted under the tested conditions.There were significant differences of the tribological properties of the rubbing pairs in the different concentrations H2O2 solution because of oxidation and corrosion.This research has revealed that the main wear mechanisms between the rubbing pairs are severe adhesive wear,abrasive wear and corrosive wear in the H2O2 solution with different concentrations.A model has been established to assess the most suitable concentration of the H2O2 solution for the tribological properties of the rubbing pairs.The result shows that 50% concentration of the H2O2 solution is the most suitable.The assessment result is consistent with the experimental result.It is believed that the knowledge gained in this study is useful for the optimization of the friction pairs in the extreme condition. 展开更多
关键词 ZrO2 ceramic 1Cr18ni9Ti stainless steel hydrogen peroxide
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Radiation damage of 1Cr18Ni9Ti and Zr-Ti-Al alloys due to energetic particle irradiation
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作者 Maosheng CHAI Wensheng LAI +1 位作者 Zhengcao LI Wei FENG 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2012年第1期29-39,共11页
The radiation damage of 1Cr18Ni9Ti stainless steel and the Zr-Ti-Al alloy by 200 keV Xe+ ions bombardment at the fluence ranging from 1×1014 to 8×1015 ions/cm2 has been investigated by conventional transmis... The radiation damage of 1Cr18Ni9Ti stainless steel and the Zr-Ti-Al alloy by 200 keV Xe+ ions bombardment at the fluence ranging from 1×1014 to 8×1015 ions/cm2 has been investigated by conventional transmission electron microscope, X-ray diffraction line profile analysis (XRDLPA) and nanoindentation. XRDLPA shows that the order of magnitude of dislocation density in both materials remains almost unchanged up to the highest irradiation dose. Selected-area electron diffraction combined with bright and dark field image indicates that 1Cr18Ni9Ti is more easily damaged than the Zr-Ti-Al alloy. With increasing the ions fluence, the radiation damage became more severe in 1Cr18Ni9Ti, accompanied with phase transition and partial amorphization. The nano-hardness was found to increase rapidly with increasing ion fluence till the dose of 1×1015 ions/cm2, and then gradually saturate with dose. The enhancement of hardness in irradiated materials is due to irradiation-induced defects acting as barriers to dislocation motion. 展开更多
关键词 Damage structure Zr-Ti-Al alloy 1Cr18ni9Ti stainless steel XRD TEM IRRADIATION Depth profile
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