1Cr18Ni9Ti晶问腐蚀及热处理工艺研究

对1Cr18Ni9Ti不锈钢中铁素体的形态、分布及其数量对晶间腐蚀性能的影响进行了探讨，并对如何降低晶间腐蚀及热处理工艺进行了试验研究。试验是根据1Cr18Ni9Ti材料成分组织原始状态的特点，采用对比实验的方法，以获得比较理想的铁素体含量并改善铁素体形态、分布的工艺方法。     

1Cr18Ni9Ti车削加工工艺改进

针对1Cr18Ni9Ti在切削过程中加工硬化严重、切削力大、切削温度高和切屑不易折断等原因造成的切削性能较差的特点。通过热处理以改善材料的组织,合理选择刀具材料、几何参数、切削用量和切削液等,以改进1Cr18Ni9Ti的车削加工工艺。获得了理想的切削效果,大大降低生产成本,提高了生产效率。     

焊接方法对1Cr18Ni9Ti钢焊接接头性能的影响

试验研究了不同焊接方法对1Cr18Ni9Ti钢焊接接头性能的影响,采用万能试验机进行拉伸试验。利用金相显微镜对焊接接头组织进行观察,分析焊接方法对接头性能和组织的影响。研究结果表明:TIG焊接接头性能和组织均优于MMA焊接接头。     

提高1Cr18Ni9钢耐腐蚀性的热处理方法

通过热处理实验找出不锈钢中的碳在晶界形成富铬的M21C6碳化物，使晶界附近的奥氏体贫铬，贫铬区的铬含量小于极限浓度时，就产生晶间腐蚀，增加铬的扩散时间，可提高抗晶间腐蚀的能力。     

1Cr18Ni9奥氏体不锈钢的焊接技术

通过对1Cr1SNi9奥氏体不锈钢的性能和焊接性的分析,指出了焊接晶间腐蚀和焊接热裂纹是焊接技术的关键。从而制定了合理的焊接工艺,包括焊条选择、焊接工艺参数、焊后处理等技术措施,确保了焊接质量。     

18Cr2Ni4WA钢复合等温淬火工艺研究

介绍18Cr2Ni4WA钢热处理复合等温淬火工艺方法以及初步的试验数据。复合等温度淬火工艺是利用18Cr2Ni4WA钢的芯部马氏体转变点Ms和渗碳后表面渗碳层的马氏体转变点Ms差异进行淬火的工艺研究。     

奥氏体不锈钢C、N离子注入表面改性的研究

采用D/MAX-ⅢB型X射线衍射仪、原位纳米力学测试系统、LKDM-2000型摩擦磨损仪、S-3000N型扫描电子显微镜和CHI660A电化学工作站,对经C、N离子注入的1Cr18Ni9Ti奥氏体不锈钢的组织及耐磨性、耐蚀性进行了较深入地研究。研究结果表明,1Cr18Ni9Ti奥氏体不锈钢经离子注入后,注入层硬度提高,摩擦系数降低,耐磨性提高,抗腐蚀性增强;注入N+的剂量为2.44×1017ions/cm2时,注入层的硬度最高,耐磨、耐蚀性最好,性能最佳。     

奥氏体不锈钢C、N离子注入表面改性的研究

采用D/MAX-ⅢB型X射线衍射仪、原位纳米力学测试系统、LKDM-2000型摩擦磨损仪、S-3000N型扫描电子显微镜和CHI660A电化学工作站对经C、N离子注入的1Cr18Ni9Ti奥氏体不锈钢的组织及耐磨性、耐蚀性进行了较深入地研究。研究结果表明,1Cr18Ni9Ti奥氏体不锈钢经离子注入后,注入层硬度提高,摩擦系数降低,耐磨性提高,抗腐蚀性增强;注入N+的剂量为2.44×1017ions/cm2时,注入层的硬度最高,耐磨、耐蚀性最好,性能最佳。     

低压等离子喷涂Ti—Ni合金涂层工艺的研究

本文较详细地研究了低压等离子喷涂(LPPS)Ti～Ni合金涂层的工艺以及喷涂参数(如喷涂气氛,气氛压力,主气流量,喷涂功率,粉末粒度,喷涂距离和送粉率等)对Ti-Ni合金涂层质量的影响。研究结果表明,适当地选择工艺参数,可以获得致密并且与基体结合强度高、耐蚀的高质量Ti-Ni合金涂层。     

20Cr2Ni4A钢齿轮的热处理

研究了 2 0Cr2Ni4A钢齿轮的热处理过程及其变形规律 ,并对齿轮使用后的磨损情况进行了检测     

影响Cr20Ni80电热合金使用寿命因素的研究现状

综述对Cr20Ni80使用寿命影响因素的研究进展.Cr20Ni80的表面氧化膜是影响其使用寿命的重要因素,氧化膜越致密,与基体粘结力越强,其使用寿命越长.Cr20Ni80合金中存在的其他元素如氮、氧、碳、硅和稀土等对其力学性能和抗氧化性能的影响是复杂的.同时也不可忽视环境介质对合金的作用.     

Research on the oxidation kinetics curve of 1Cr11Ni2W2MoV steel hot-dipped Al

In this paper, 1Cr11Ni2W2MoV steel that is aerial engine blade materials was hot dipped Al-6%Si-4%RE in order to improve its application temperature. According to GB/T13303 - 91 standard, samples with coating and without coating were oxidated at 700℃ from 5 h to 600 h. Two oxidation kinetics curves were drawn in terms of data of tests. The results showed that oxidation resistance of 1Cr11Ni2W2MoV steel hot-dipped Al-6% Si-4%RE is better than one without coating. From SEM and EMPA, the surface of coating formed dense and uninterrupted α-Al2O3, which is the bars of oxidation resistance. In addition, according to one crossing point of the two curves, it was suggested that hot dipped aluminum steel should be annealed before used.     

Research on the oxidation kinetics curve of 1Cr11Ni2W2MoV steel hot-dipped Al

In this paper, 1Cr11Ni2W2MoV steel that is aerial engine blade materials was hot dipped Al-6,Si-4,RE in order to improve its application temperature. According to GB/T13303 - 91 standard, samples with coating and without coating were oxidated at 700℃ from 5 h to 600 h. Two oxidation kinetics curves were drawn in terms of data of tests. The results showed that oxidation resistance of 1Cr11Ni2W2MoV steel hot-dipped Al-6, Si-4,RE is better than one without coating. From SEM and EMPA, the surface of coating formed dense and uninterrupted α-Al2O3, which is the bars of oxidation resistance. In addition, according to one crossing point of the two curves, it was suggested that hot dipped aluminum steel should be annealed before used.