姜云禄,陈怀宁,吴昌忠,池云飞.70mm厚锻造及轧制镍基合金690板材热塑性和热裂纹敏感性[J].稀有金属材料与工程,2019,47(3):758~764.[jiangyunlu,chen huaining,wu changzhong,chi yunfei.Thermal ductility and hot cracking for 70mm thick forge and rolling plate of nickel alloy 690[J].Rare Metal Materials and Engineering,2019,47(3):758~764.]
70mm厚锻造及轧制镍基合金690板材热塑性和热裂纹敏感性
投稿时间:2018-03-17  修订日期:2018-08-10
中文关键词:  镍基合金690  热塑性  热裂纹
基金项目:
中文摘要:
      利用光学显微镜、扫描电镜及Gleeble 1500热模拟机,分析70mm厚锻造及轧制镍基合金690板材的热塑性及热裂纹敏感性。试验结果显示:锻造和轧制板材均有优异的热塑性,同种材料表层试样的热塑性高于中心位置试样的热塑性。模拟加热过程发现,较低温度条件下轧制板材的热塑性高于锻造板材的热塑性,随着温度的升高锻造板材的热塑性高于轧制板材的热塑性。模拟冷却过程发现,锻造板材比轧制板材具有更好的热塑性。热模拟试样的断面较为光滑,部分位置出现熔融现象。横向可调拘束裂纹敏感性试验结果显示,锻造及轧制镍基合金690板材具有较高的热裂纹敏感性。热裂纹的数量及长度随着施加应变的增加而增加。
Thermal ductility and hot cracking for 70mm thick forge and rolling plate of nickel alloy 690
英文关键词:nickel alloy 690  thermal ductility  hot cracking
英文摘要:
      The property of thermal ductility and hot cracking sensibility for the forge and rolling plate with 70mm thickness nickel alloy were studied using an optical microscope (OM), scanning electron microscope (SEM), and Gleeble 1500 thermal simulation equipment. The results show that the forge and rolling plate have excellent thermal ductility; the samples taken from surface position have higher thermal ductility than those taken from middle position at the same plate. The rolling plate has higher thermal ductility than the forge plate at the lower temperature during heating process. As rising the temperature, the forge plate has higher thermal ductility than the rolling plate. During the cooling process, the forge plate shows higher thermal ductility than the rolling plate. The rupture sections have more smooth morphology, even some sections exist the melt phenomenon. The forge and rolling nickel alloy 690 have high hot cracking sensitivity. The crack number and length increased with the strain increased.
作者单位E-mail
姜云禄 中国科学院金属研究所 yljiang@imr.ac.cn 
陈怀宁 中国科学院金属研究所  
吴昌忠 中国科学院金属研究所  
池云飞 哈电集团(秦皇岛)重型装备有限公司  
摘要点击次数: 25
全文下载次数: 8
查看全文  查看/发表评论  
关闭