1) weld coarse crystal region
焊接粗晶区
1.
By using weld thermal simulation technology,and considering from view point of stiffness for the weld coarse crystal region,it is determined the elimination of preheating for HCM2S steel welding is fully feasible,the suitable heat treatment specification to be(710-750)℃×2 h.
采用焊接热模拟技术,确定了从焊接粗晶区韧性的角度考虑,取消HCM2S钢焊接对于预热是可行的,其合适的焊后热处理范围为(710～750)℃×2h。
2) weld decay
焊接区晶间腐蚀
3) CGHAZ
粗晶区
1.
Effect of Welding Parameters on Low-temperature Toughness in CGHAZ for X80 Pipeline Steel;
焊接工艺参数对X80管线钢焊接粗晶区低温韧性的影响
2.
Thermal cycle of in-service welding and the microstructure & property of CGHAZ of X70 pipeline steel;
X70钢在役焊接热循环及粗晶区组织性能研究
3.
EFFECT OF COOLING TIME ON CGHAZ TOUGHNESS AND MICROSTRUCTURE OF Ti MICROALLOYED STEEL;
冷却时间对Ti微合金钢焊接粗晶区组织及韧性的影响
4) coarse grain zone
粗晶区
1.
Aimed at TCS ferric strainless sleel for the new type railway vehiele,the effect of the heat input energy on the microstructure of the coarse grain zone of heat affected zone in welding joint was studied,and the range of the suitable heat input energy was recommend,which was 5.
针对新型铁路车辆用TCS铁素体不锈钢,研究了热输入对其焊接热影响区粗晶区组织特征的影响,并以此提出了其合理的焊接热输入范围为5。
2.
By the experimental method of simulating stressrelief on the welding heataffect coarse grain zone,we study the susceptibility of stressrelief cracking in the process of post weld heat treatment and discuss the mechanism of the stressrelief cracking.
采用模拟焊接热影响区粗晶区应力释放的试验方法，研究ＣＦ６２钢在焊后热处理过程中的消除应力裂纹敏感性及其形成机理。
3.
In addition to,impact toughness of coarse grain zone decrease with the t8/5 increasing.
结果表明:粗晶区是X70级管线钢热影响区中韧性较差的区域,粗晶区韧性恶化主要是晶粒粗化以及粒状贝氏体、上贝氏体等非平衡低温转变产物数量增多造成的,且粗晶区的冲击韧性随着t8/5的增加而降低。
5) coarse-grained zone
粗晶区
1.
Structure and property of coarse-grained zone in weld of a high strength low alloy 20Mn2WNbB steel studied by thermal simulation;
低合金高强钢20Mn2WNbB焊接热模拟粗晶区组织与性能
2.
The result showed that cooling rate have a great effect on microstructure of coarse-grained zone and the tougness.
研究了含铜时效钢焊接粗晶区的组织与韧性,并测定了含铜时效钢焊接粗晶区连续冷却转变曲线(SHCCT曲线)。
6) coarse grained region
粗晶区
1.
The variety regulations between the toughness of coarse grained region for 4 kinds X80 high property pipeline steels and welding heat input number were studied by welding thermal simulation technique,optics and TEM as well as impact toughness test.
利用焊接热模拟技术、光学金相、透射电镜和冲击试验,研究了4种X80高性能管线钢焊接粗晶区韧性随焊接热输入的变化规律。
2.
The relationship between microstructure and toughness of coarse grained region in X80 pipeline steel during double welding thermal cycle was investigated using welding thermal simulation technique,OM and TEM as well as impact toughness and crack tip opening displacement(CTOD) tests.
利用热模拟技术,采用光学、透射电镜和冲击韧度、裂纹尖端张开位移(CTOD)试验研究了X80管线钢在(多道焊接)二次热循环过程中粗晶区的韧性与显微组织的关系。
3.
In this paper,microstructure of the coarse grained region was got by means of weld heat simulation.
利用焊接热模拟技术,获取粗晶区组织,经过不同的热处理工艺,测定其冲击韧性和硬度,进行了显微组织分析,探讨了焊后热处理对 X52管线钢粗晶区韧性的影响。
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)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条