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1)  weld regions
焊接接头区
2)  property region of welding joint
焊接接头特征区
1.
Scanning electron spectroscopic analysis and membership function have been adopted to determine reliably the property region of welding joint and to furnish theoretical evidence for examination of microstructure and decision of grade.
用电子扫描能谱分析和隶属函数分析了熔化焊接接头特征区,结果表明,这种方法能确定焊接接头的特征区,并为检验金相组织和判定级别等提供理论依据。
3)  welded joints
焊接接头
1.
Fatigue properties of welded joints of 16Mn steel in super long life region;
超长寿命区间16Mn钢焊接接头疲劳性能
2.
CTOD fracture toughness test for super-thick welded joints of D36 offshore platform steel;
海洋平台用钢D36超大厚度焊接接头CTOD试验
3.
Experiment on dressing for improving fatigue strengths of welded joints with low transformation temperature electrode;
利用低相变点焊条熔修方法改善焊接接头疲劳强度的试验
4)  welded joint
焊接接头
1.
Low temperature toughness of ultra low-carbon 9Ni steel welded joints;
超低碳9Ni钢焊接接头低温韧性
2.
Development of feature database of welded joint for the oil box based on Msc.Marc;
基于Msc. Marc的油箱结构焊接接头特征库开发
3.
Effect of heat treatment with protective coating on microstructure of D406A steel welded joint;
热处理保护涂料对D406A钢焊接接头显微组织的影响
5)  weld joint
焊接接头
1.
Microstructure and properties of Al-Mg-Sc alloy weld joints filled with Al-Mg-Zr and Al-Mg-Zr-Sc weld wires;
含钪与不含钪铝镁钪合金焊接接头的组织与性能
2.
Stress corrosion cracking of weld joint of pipeline steel X70 in near-neutral solution;
X70钢焊接接头在近中性溶液中应力腐蚀行为研究
3.
Fatigue performance of weld joint for high strength bridge steel
高强度桥梁钢焊接接头疲劳性能的研究
6)  welding joint
焊接接头
1.
Improving quality of Ti6Al4V welding joint by arc-excited ultrasonic treatment;
电弧超声改善Ti6Al4V焊接接头性能的研究
2.
Performance of the steel plate and welding joint for 10×10~4 m~3 oil storage tank;
10×10~4m~3原油储罐用钢板及其焊接接头性能
补充资料:焊接接头晶间腐蚀


焊接接头晶间腐蚀
welded joint intercryctalline corrosion

honjle」}etou jingj旧n fush{焊接接头晶间腐蚀(welded joint intererys-talline eorrosion)在焊接接头处出现的沿晶粒边界发生的腐蚀现象。外观仍可有金属光泽,但实际上晶粒已失去联系,钢质已变脆。在奥氏体不锈钢部位有焊缝晶间腐蚀、敏化区腐蚀和刀状腐蚀等三种不同部位的晶间腐蚀。关于奥氏体不锈钢的晶间腐蚀机理有多种学说,其中以碳化物(如er23e。或(er、Fe)23e。等)在晶界沉淀现象的“贫铬理论”比较为人们所接受。所以为防止这类晶间腐蚀尽量降低含碳量,使焊缝金属含有一定量的稳定元素(如钦、妮等)以防止或降低晶界Cr23C。的形成。此外,焊缝的组织状态也有影响,单相奥氏体组织的焊缝有利于柱状晶的发达,出现贫铬层后会使腐蚀贯穿于晶粒之间,若焊缝为奥氏体了加高温铁素体占的双相组织,由于树枝状被打破,不能构成集中的腐蚀通道。高铬铁素体也会有晶间腐蚀,但与奥氏体钢不同的是从高温急冷下来即有晶间腐蚀倾向,可通过650一85oC加热、缓冷使铬扩散均匀化来消除贫铬层,防止晶间腐蚀。 (许祖泽)
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