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1.
热处理对高强软磁不锈钢0Cr13Ni4Mo性能的影响   总被引:2,自引:0,他引:2  
研究了高强软磁不锈钢0Cr13Ni4Mo在不同热处理状态下,钢的电磁性能、力学性能、电化学性能的变化。研究结果表明:0Cr13NiMo钢通过1000℃固溶处理,再经580℃回火,控制钢中逆变奥氏体在7% ̄9%之间,可获得电磁性能,力学性能,耐蚀性能皆优的高强软磁不锈钢。  相似文献   

2.
曹长娥 《钢管》1999,28(2):57-61
开发了在CO2环境下使用的0.01C-11Cr-1.5Ni-0.5Cu-0.01N及在CO2+微量H2S环境下使用的0.01C-12Cr-5Ni-2Mo-0.01N管道管用马氏体不锈钢无缝钢管。该两种钢管的强度都是X80级,夏氏冲击值在100J(-40℃,焊接状态)以上,具有无需预热及焊后不作处理也不会产生裂纹的优异焊接性能。指出CO2环境用11Cr钢比0.2C-13Cr钢具有更优异的耐CO2腐蚀性能,并显示了CO2+微量H2S环境用12Cr钢管在10%NaCl水溶液、pH4.0,0.002MPaH2S条件下的耐SSC性能。此类钢管适于替代过去输送管道管使用的靠腐蚀抑制剂防腐的管材,以及双相不锈钢等高价耐蚀材料。  相似文献   

3.
在浆料罐系统中研究了Ni-P涂层的泥浆冲蚀-腐蚀行为.Ni-P涂层抵抗泥浆冲蚀-腐蚀的能力大大高于马氏体不锈钢2Cr13和奥氏体不锈钢1Cr18Ni9Ti,扫描电镜分析表明,在线速度为6.2m/s时,2.5小时后Ni-P涂层表面轻微擦伤,在11.1m/s时,0.5小时后,表面为切削特征,运行不到15小时表面严重剥落。  相似文献   

4.
研究了渗碳温度、炉气碳势对5CrMnMo试样渗碳层深,表面碳量的影响以及层深,表面碳量对钢的性能影响,试验表明,5CrMnMo钢具有良好的渗碳特性,其最佳渗层深度0.8-1.2mm,表面碳量应控制在0.8%-1.0%范围,可获得适用于冷镦模具的最佳力学性能。  相似文献   

5.
近年来不论是食品业和医疗界还是一般家庭,都对卫生防菌意识日益提高,因此,市场对于抗菌制品的需求不断增长,抗菌材料的开发受到重视。人们首先发现在不锈钢中添加大量Cu时便可显示出有效的抗菌效力,从而开发成功兼备制造加工性和抗菌性的铁素体系抗菌不锈钢(低C、N-17%Cr-1.5%Cu)。随着抗菌不锈钢需求的不断增长和应用范围的日益扩大,又相继开发成功了马氏体系抗菌不锈钢(0.3%C-13%Cr-3%Cu)和奥氏体系抗菌不锈钢(18%Cr-9%Ni-3.8%Cu).在不同钢种中所含Cu量也不同,是因为…  相似文献   

6.
1Cr18Ni9Ti不锈钢的马氏体相变量与孔蚀敏感性的相关性 …   总被引:2,自引:0,他引:2  
研究了AISI321亚稳态奥氏体不锈钢在-70℃(液氮气氛)经不同程度拉伸形变得到的含有不同α‘-马氏体的试样在中性含氯离子介质中,材料的马氏体相变量与孔蚀敏感性的关系。孔蚀击蚀电位,位蚀诱导期和孔数的测试结果均表明,当α’-马氏体含量约小于5%和大于15%时,经形变诱发马氏体相变的1Cr18Ni9Ti奥氏体不锈钢在中性NaCl溶液中,孔蚀敏感性随α‘-马氏体含量的增加而增大,当α’-马氏体含量在  相似文献   

7.
马氏体不锈钢1Cr13的焊接及应用傅茂均山东第二轻工机械厂(252059)1Cr13不锈钢在30℃以下时在弱腐蚀性介质中,在大气、蒸汽、淡水中亦具有良好的耐腐蚀性能,因而在轻工机械和造纸设备中得到广泛的应用。1焊接性分析1Cr13不锈钢焊按性较差,因...  相似文献   

8.
研究了Cr12钢经980℃奥氏体化后,于280℃硝盐中等温不同时间获得不同比例的马氏体-贝氏体复合组织与力学性能的关系,并与常规淬火、回火后的力学性能进行了比较.结果表明:具有马氏体-贝氏体复合组织的Crl2钢与常规淬火、回火的回火马氏体组织相比,除硬度有所降低外,抗弯强度、挠度、冲击韧性及耐磨性均有较大幅度的提高.经980℃加热、280℃等温5h、180℃回火后,Cr12钢具有最佳的综合力学性能.  相似文献   

9.
文摘     
《钢管》1996,(1)
文摘960101耐酸高耐蚀13Cr油井钢管开发之-(材质设计和实机轧制结果)[刊,日]/川上哲…//材料─1995,3(8)为提高油井管耐CO2等腐蚀性能,日本新日铁公司已研制出改进型13Cr不锈钢(0.02%C-2%Ni-13%O-0.06%N),...  相似文献   

10.
活性气体对马氏体不锈钢MAG焊熔敷金属性能的影响   总被引:2,自引:1,他引:1  
针对大型水轮机转轮用ZG0Cr13Ni5Mo高强马氏体不锈钢的熔化极气体保护焊工艺,研究了活性气体对焊丝HS367L和HS135L熔敷金属化学万分的力学性能的影响。  相似文献   

11.
The cast martensitic chromium nickel stainless steels such as 13Cr4Ni, 16Cr5Ni, and 17Cr4Ni PH have found wide application in hydro turbines. These steels have adequate corrosion resistance with good mechanical properties because of chromium content of more than 12%. The 13Cr4Ni stainless steel is most widely used among these steels; however, lacks silt, cavitation, and water impingement erosion resistances (SER, CER, and WIER). This article deals with characterizing 13Cr4Ni stainless steel for silt, cavitation, and water impingement erosion; and studying its improved SER, CER, and WIER behavior after high-power diode laser (HPDL) surface treatment. The WIER and CER have improved significantly after laser treatment, whereas there is a marginal improvement in SER. The main reason for improved WIER and CER is due to its increased surface hardness and formation of fine-grained microstructure after HPDL surface treatment. CER and WIER of HPDL-treated 13Cr4Ni stainless steel samples have been evaluated as per ASTM G32-2003 and ASTM G73-1978, respectively; and these were correlated with microstructure and mechanical properties such as ultimate tensile strength, modified ultimate resilience, and microhardness. The erosion damage mechanism, compared on the basis of scanning electron micrographs and mechanical properties, is discussed and reported in this article.  相似文献   

12.
采用力学性能测试、SEM和XRD等手段研究了淬火+低温回火处理的0Cr16Ni6高强度不锈钢和过时效处理的00Cr11Ni11MoTi马氏体时效不锈钢,并分析了残留/逆转变奥氏体对试验钢超低温缺口抗拉强度和冲击性能的影响。结果表明,在两种试验钢室温强韧性相近的情况下,0Cr16Ni6钢在超低温下(-196 ℃)的缺口抗拉强度和冲击性能显著优于00Cr11Ni11MoTi钢。根据冲击试样远离断口和断口附近马氏体/奥氏体衍射峰的相对强度分别定量计算的残留/逆转变奥氏体含量,发现在裂纹形成和扩展过程中0Cr16Ni6钢有接近90%的残留奥氏体通过应变诱发相变生成马氏体,显著改善了超低温韧性;而过时效00Cr11Ni11MoTi钢形成的逆转变奥氏体具有较高的稳定性,难以发生应变诱发马氏体相变,改善超低温韧性作用程度有限。  相似文献   

13.
The resistance to cavitation erosion (CE) was measured using a magnetostrictive device and a rotating disk device for some CrMnN stainless steels (Chinese patent ZL 90 1 02197.0). The microstructural changes in the surface layer before and after CE were analyzed by use of Mossbauer spectra. Results show that the resistance to CE of duplex austenitic-martensitic CrMnN stainless steels is much better than that of ZG0Cr13Ni4-6Mo and ZG0Crl6Ni5Mo steel, which are in common use for hydraulic turbine runners. The metastable austenite and its changes in the process of CE are the key factors why the CrMnN stainless steels have excellent resistance to cavitation erosion.  相似文献   

14.
Advances in the research of nitrogen containing stainless steels   总被引:1,自引:0,他引:1  
The current status of nitrogen containing stainless steels at home and aboard has been introduced. The function and existing forms of nitrogen in the stainless steels, influence of nitrogen on mechanical properties and anti-corrosion properties as well as the application of nitrogen containing cast stainless steels were discussed in this paper. It is clear that nitrogen will be a potential and important alloying element in stainless steels. And Argon Oxygen Decarbonization (AOD) refining can provide an advanced manufacture process for nitrogen containing stainless steels with ultra-low- carbon and high cleanliness.  相似文献   

15.
1Cr18Ni9Ti与1Cr13不锈钢的焊接试验   总被引:1,自引:1,他引:0       下载免费PDF全文
通过钨极氩弧焊方法,对 1Cr18Ni9Ti 与 1Cr13 实施焊接.采用光学显微镜、扫描电镜对 1Cr13 马氏体型与 1Cr18Ni9Ti 奥氏体型不锈钢焊接接头进行金相组织、断口形貌观察及分析;利用显微硬度计、电子万能拉伸机测量焊接接头的力学性能;并通过海水模拟溶液浸泡试验,测量焊接接头极化曲线和交流阻抗谱.结果表明,通过手工钨极氩弧焊,采用直流正接接法,在合适的工艺下(焊接电流为 80 A,焊接速度为 110 mm/min),能够获得外观平整、组织均匀,力学性能与电化学性能符合要求的焊接接头.
Abstract:
The stainless steels of 1Cr18Ni9Ti and 1Cr13 were welded through deterministic craft by tungsten inert-gas (TIG) welding. The microstructure and fracture pattern of weld joints of 1Cr13martensite and 1Cr18Ni9Ti austenite stainless steels were observed and analyzed by means of LOM and SEM, the mechanical properties of the weld joints were measured with micro-hardness tester and electronic universal stretcher, and the polarization curves and AC impedance spectroscopy of weld joints were tested by seawater immersion test of simulation solution. The results show that adopting manual TIG welding through electrode negative to direct current soldering machine to weld 1Cr18Ni9Ti austenite stainless steel and 1Cr13 martensite stainless steel is feasible; under suitable process (welding current is 80 A, welding speed is 110 mm/min), weld joints can obtain good appearance and uniform structure; mechanical properties and galvano-chemistry properties can meet use requirements.  相似文献   

16.
This paper introduces three modifications of cast, low carbon stainless steels with about 15 to 20% Cr, 13% Ni and 4.5 to 6.5% Si which can be used for pumps and valves in nitric acid plants. Mechanical and structural properties, castability, machinability and weldability are discussed to characterize the practical applicability of these alloys for producers and users of such cast components. Laboratory corrosion tests in boiling nitric acid between 50 and 98 wt% prove the superior resistance of the Si-bearing alloys in the 90% and 98% acid compared to standard CrNi-steels without Si. Comparative field tests with cast pump impellers and casings confirm the very good corrosion resistance of the Si-bearing alloys in highly concentrated nitric acid under service conditions.  相似文献   

17.
Abstract

The resistance to hydrogen cracking of Cr - Mo, Ni - Cr - Mo and Si - Mn steels which are employed in armoured vehicle construction was evaluated under implant test conditions. Austenitic stainless steel filler (AWS E312), which is reported to be resistant to hydrogen assisted cracking, was used to study the cracking tendency of all the three steels. Four other fillers, namely a nickel based filler (ENiCrFe-3), a low carbon, low alloy steel, a mild steel (AWS E6013) and a matching filler for Cr - Mo, were employed to evaluate their relative cracking tendency. Cr - Mo and Ni - Cr - Mo steels exhibited high cracking tendency while Si - Mn steel was resistant to cracking with the E312 filler. Cr - Mo steel was resistant to cracking with the nickel based filler, the low carbon, low alloy steel and the matching filler. The observed cracking tendency of the steels is linked to a susceptible interface/fusion boundary microstructure.  相似文献   

18.
不锈钢的大气腐蚀研究—12年暴露试验总结   总被引:3,自引:1,他引:2  
总结了5种不锈钢在我国7个试验点的12年大气腐蚀试验结果,材料中包括了最常用的不锈钢,环境中包括了亚热带,温带,工业性,海洋性,干燥环境及湿热环境等各种典型环境。不锈钢在大气中是耐蚀的。当含Cr量达到18%以上时耐蚀性很好,钼能明显提高不锈钢的耐蚀性,超低碳也能提高其耐蚀性。  相似文献   

19.
某些Fe-Cr-Ni系奥氏体不锈钢在特定的状态下可呈现出一定的永磁特性。基于这一事实,本文研究了碳含量对其永磁性能的影响。发现,随着碳含量的增加,3种不同Ni、Cr含量合金的矫顽力Hc增加,而剩磁Br下降,此外,还给出了Ni、Cr含量范围随碳含量而改变的关系。  相似文献   

20.
抗地震用建筑结构钢的显微组织及成分设计   总被引:1,自引:0,他引:1  
地震波谱分析表明,地震区建筑结构用钢受震时的主要失效形式是高应力低周疲劳损伤和断裂。提高建筑结构钢的抗震性,应在保证钢材具有较高强度的同时,提供其塑性和韧性。低碳微合金铁素体晶粒超细化钢、双相钢和低合金相变诱发塑性钢都具有良好的抗震性。本文对钢的抗震性、显微组织和成分设计进行了简要阐述。  相似文献   

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