共查询到19条相似文献,搜索用时 93 毫秒
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采用"热旋锻-拉拔"方法制备了直径为φ65 μm、包覆铜层厚度较均匀、表面质量高和界面结合质量良好的铜包铝复合微丝,研究了合理热旋制度、热旋复合成形铜包铝线材的组织和界面结合状态以及中间退火和拉拔对线材组织与性能的影响.结果表明:合理的旋锻制度为旋锻温度350℃,单道次变形量40%,旋锻后形成了动态再结晶组织和厚度为0.7 μm的界面扩散层.复合线材的合理退火工艺参数为350℃/30 min (退火温度350℃、退火时间30 min),该条件下退火后线材延伸率达到最高值35.7%,界面扩散层厚度约为2.1 μm,退火后铜层和铝芯发生再结晶,组织内部形成等轴晶组织.当退火温度超过350℃时,铜层和铝芯晶粒长大,界面扩散层厚度增加,从而导致线材的延伸率下降.将单道次变形量控制在15%~20%,经过粗拉,制备了φ0.96 mm的丝材;粗拉后不进行退火处理,将单道次变形量控制在8%~15%,经过细拉,制备了表面光洁、直径为φ65 μm的复合微丝.在拉拔过程中,铜层和铝芯均出现〈111〉丝织构. 相似文献
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内螺纹铜管成形工艺研究 总被引:1,自引:0,他引:1
陈海林 《有色金属材料与工程》2009,30(4):166-168
阐述了内螺纹铜管成形的两种生产工艺:拉拔旋压成形法和铜带滚压成形焊接法。对两种工艺的优劣进行了研究分析,并指出了应用前景。 相似文献
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铜铝复合材料的研究与应用 总被引:4,自引:0,他引:4
介绍了铜铝复合材料的研究与应用.轧制复合法、爆炸复合法、挤压拉拔法是生产铜铝复合材料的常用方法.应用较多的铜铝复合材料主要有铜包铝复合线材、铜铝复合接头材料、铜铝复合板带等. 相似文献
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V. V. Satya Prasad G. Madhusudhan Reddy 《Transactions of the Indian Institute of Metals》2012,65(2):135-143
The surface properties such as wear, corrosion, oxidation resistance etc., can be improved by using suitable cladding technique. The most commonly used cladding material is stainless steel for cladding on carbon and low alloy steel base materials. Mechanical properties are considered important for satisfactory performance of clad joints used in several defence applications. In this work, cladding of a high strength low alloy steel with stainless steel was carried out using explosive cladding and electroslag strip cladding processes. The relationship between mechanical properties and microstructure of clad materials was evaluated. The bond interface in explosively clad material shows a wavy interface compared to strip clad interface. Electron probe microanalysis revealed that inter-diffusion of elements was significant in strip clad joints and insignificant in explosively clad joints. Shear strength, notch tensile strength and impact toughness of explosive clad joints are much superior compared to those in strip clad joints. 相似文献
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三元硼化物金属陶瓷覆层材料耐腐蚀性能研究 总被引:4,自引:0,他引:4
以Mo粉、FeB合金粉和Fe粉为基本原料,分别加入Cr、Ni、C或同时加入Cr、Ni、C合金元素成分,采用原位反应真空液相烧结工艺,在Q235钢基体上制备三元硼化物金属陶瓷覆层材料。研究了合金组分对覆层材料耐腐蚀性的影响。结果表明,三元硼化物金属陶瓷覆层材料的覆层具有远比钢基体优越的耐蚀性,C组分的单独加入降低了覆层的耐蚀性,Cr、Ni组分的加入显著提高了覆层的耐蚀性,同时加入Cr、Ni、C作为合金组分使覆层具有最佳的耐蚀性。 相似文献
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Mohsen Saboktakin Rizi Hamid Reza Javadinejad Eiman Aghababaei Marzieh Ebrahimian 《Transactions of the Indian Institute of Metals》2018,71(8):1941-1950
Titanium cladding on steel leads to the creation of properties such as resistance to corrosion that contribute to a widespread application of this metal composite in industries such as nuclear, chemical, aerospace, and biomaterial. One of the solid-state bonding methods to apply such a clad is to use the roll bonding method. In this paper, quality of the titanium cladded on carbon steel was studied in terms of metallurgical, mechanical properties and the effect of the copper interlayer on the metallurgical properties of bonding. The interface between the clad and the base metal was studied using a scanning electron microscope and light microscope and the phases formed were identified by X-ray diffraction analysis. The results showed that an increase in the bonding temperature increased the thickness of the intermetallic compounds, increased the hardness at close distances to the interface, and reduced the adhesion of the titanium cladded to the base metal. 相似文献
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以直径20 mm, 包覆比50%的银包铝细棒为研究对象, 通过有限元数值模拟以及相应的实验验证, 得出了银包铝复合材料立式连铸复合成形工艺的边界条件.采用ProCAST软件模拟了立式连铸成形过程, 得出各工艺参数对连铸结果的影响规律, 给出了可行的连铸工艺参数范围及工艺调控策略, 以模拟结果为指导, 制备出表面质量高、复合界面效果良好的银包铝复合棒材.实验结果表明, 芯管长度、连铸速度对结果的影响最大, 芯管长度影响了芯管出口处双金属的接触温度、接触时间, 并直接改变了铝芯固液界面的相对位置.当芯管长度过短时, 银铝界面反应较强烈, 当芯管长度过长时, 芯棒冷却强度大, 芯部铝产生明显的冷隔.随着连铸速度的增大, 银的固液界面到芯管出口距离逐渐减小, 铝的固液界面距出口距离逐渐增大; 铝液铸造温度升高, 冷却水减少也会带来相似的作用.结果显示, 芯管长度30 mm, 速度37~67 mm·min-1, 银的铸造温度1225~1325℃, 铝的铸造温度800℃, 冷却水流量约300 L·h-1是可行的银包铝连铸工艺. 相似文献