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| Nb对690镍合金焊条熔敷金属DDC敏感性影响 | |
| 引用本文： | 吴伟,朱明军,李太彬.Nb对690镍合金焊条熔敷金属DDC敏感性影响[J].焊接,2007(2):55-58. |
| 作者姓名： | 吴伟 朱明军 李太彬 |
| 作者单位： | 1. 哈尔滨焊接研究所,150080 2. 海军驻上海电站辅机厂军事代表室,200435 3. 哈尔滨铁路局哈尔滨大型机械化维修段,150001 |
| 摘 要： | 采用应变开裂试验研究了Nb对Inconel 690焊条熔敷金属失塑裂纹敏感性的影响.结果表明,Nb在熔敷金属中主要以碳化物的形式存在于晶界上,起到了阻碍晶界滑移的作用,降低了材料DDC敏感性,但是当含量超过一定值以后,出现了局部液化现象,其最佳含量为1.73%. |
| 关 键 词： | 应变开裂试验 Inconel 690镍合金焊条 失塑裂纹 |
| 修稿时间： | 2006-05-09 |
Influence of Nb on ductility dip cracking sensitivity for 690 nickel alloy electrode deposited metall |
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| Wu Wei,Zhu Mingjun,Li Taibin.Influence of Nb on ductility dip cracking sensitivity for 690 nickel alloy electrode deposited metall[J].Welding & Joining,2007(2):55-58. | |
| Authors: | Wu Wei Zhu Mingjun Li Taibin |
| Abstract: | The influence of Nb on the ductility dip cracking sensitivity for Inconel 690 nickel alloy electrode deposited metal was studied by a-dbpting strain-to-fracture experiment. The results show that Nb existed in grain boundary in the form of carbide, which inhibited the sliding ofgrain boundary and decreased the ductility dip cracking sensitivity, but local liquation phenomena occurred when the content of Nb exceeded acertain value. The optimum content of Nb is 1. 73wt. %. |
| Keywords: | strain-to-fracture Inconel 690 electrode ductility dip cracking |
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