共查询到17条相似文献,搜索用时 93 毫秒
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本文就通过对00Cr22Ni5Mo3N(2205)双相不锈钢复合板复板焊接工艺的确定,研究分析了复板焊缝在轧制后的组织性能特点,从而确定2205双相不锈钢复合板的复板焊缝在轧制后组织性能完全可以满足产品的设计要求。 相似文献
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通过对某多晶硅工程项目10万t/a合成装置转化系统离心铸钢管ZG40Cr30Ni15W5Mo3V的化学成分分析,评定管道焊接工艺,从而制定了正确的焊接施工工艺,保证了该项目ZG40Cr30Ni15W5Mo3V管道的焊接质量,为类似的管道焊接提供了技术工艺参数,具有很好的推广应用价值。 相似文献
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采用化学浸泡腐蚀试验及微观组织和化学成分分析研究了5种铸造双相不锈钢在6%Fe Cl3溶液中的点腐蚀行为,并与316L奥氏体不锈钢进行了对比。结果表明,铸造双相不锈钢的抗点腐蚀性能均优于316L的,腐蚀速率和点腐蚀深度均小于316L奥氏体不锈钢的;双相不锈钢主要耐点蚀能力合金元素在奥氏体和铁素体相内分布不均匀,铬、钼更多地分配于铁素体相内,而镍、氮则更多地分配于奥氏体相内,铁素体相的耐点蚀指数PRE(Cr%+3.3Mo%+16N%)大于奥氏体相;双相不锈钢的耐点腐蚀性能与化学成分有关,随着PRE的增加,双相不锈钢的耐点腐蚀性能提高,铜元素在铁素体内析出的富铜相导致点蚀优先在铁素体内发生和发展。 相似文献
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以准静态压缩性能作为参考,通过气枪式霍普金森压杆试验,研究了03Cr21Ni14Mn5Mo3N不锈钢在常温20℃和低温-40℃两种环境条件下的动态力学性能,并基于Johnson-Cook本构模型建立了03Cr21Ni14Mn5Mo3N不锈钢本构关系。结果表明,准静态及高应变率下,03Cr21Ni14Mn5Mo3N不锈钢的强度均随着温度的降低呈升高趋势;与准静态相比,03Cr21Ni14Mn5Mo3N不锈钢在高应变率下显示出明显的应变率硬化效应;在1 500/s~4 000/s高应变率范围内,随应变率的增加,钢板动态强度略有增加,但应变率硬化效应不明显。 相似文献
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通过对两种奥氏体不锈铜022Cr17Ni12MO2和06Cr18Ni11Ti进行不同工艺的固溶处理,研究了固溶温度、保温时间及冷却方式对两种不锈钢材料的抗拉强度Rm、规定非比例延伸强度Rp0.2和RP1.0,以及伸长率A的影响规律。结果表明:相比于空冷,采用水冷方式有利于提高两种不锈钢材料的强度,而冷却方式对两种不锈钢伸长率的影响不明显;随着固溶温度的升高和保温时间的延长。总体上两种不锈钢材料的强度降低,伸长率增加。 相似文献
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《Materials Science & Technology》2013,29(9):728-736
AbstractUnusually large anisotropy of strength has been observed in commercially produced sheets of a duplex stainless steel, Fe–1·5Mn–22Cr–5·5Ni–3Mo–0·15N. The austenite and ferrite phases in this material are highly elongated and possess unusually sharp preferred crystallographic orientations. Both phases are in a recrystallized condition and have almost equal hardnesses. On the basis of the present measurements and a crystallographic analysis of plastic flow it is concluded that the observed anisotropy cannot be due to composite reinforcement in the duplex structure but is rather a result of texture hardening.MST/214 相似文献
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The 22% Cr, 5% Ni and 3% Mo grade of duplex stainless steel is by far the most used duplex grade in the chemical process industry. Duplex steels have conquered a portion of about 6% of all highly alloyed materials used to combat corrosion in chemical industry. The main areas being chloride containing aqueous media with pH values not to low-duplex steels are used there for their high stress corrosion resistance. Other fields of application are hot caustic soda at relatively low temperatures where nickel or nickel base alloys can be replaced, and media where high nickel contents are unfavourable to the corrosion resistance. Some literature findings showing other possible fields of special application of ?standard”? 22/5/3 and also of so called superduplex grades are critically evaluated. 相似文献
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H. Berns 《Materialwissenschaft und Werkstofftechnik》2002,33(1):5-11
Solution nitriding is a new heat treatment to yield a high nitrogen case on stainless steels at 1100 ± 50°C. Combining experimental results and thermodynamic calculation steels are selected to give a hard martensitic or high strength austenitic case. Especially developed steels are discussed as well as the suitability of standard grades. A martensitic case is combined with a martensitic core in steel Cr13C0.2 and with a softer ferritic‐martensitic core in steel Cr13C0.1. The nitrogen content of an austenitic case increases with the Cr/Ni ratio, e.g. in the order of Cr17Ni12Mo2, Cr18Ni10, Cr22Ni5Mo3N0.2. The duplex microstructure of the latter provides the highest yield strength in the core. It is essential to stay clear of the austenite/austenite + M2N boundary and avoid precipitates which deteriorate the fatigue and corrosion resistance. Seventeen steels are assessed in this report. 相似文献