摘要
采用BNi82CrSiB钎料在1070℃/15min规范下对DD6单晶合金进行了真空钎焊实验研究。获得了致密完整的钎焊接头,钎料元素未向母材扩散。钎焊接头在750℃的抗拉强度为400 MPa左右,750℃/100h持久强度可达100MPa。钎焊接头的失效断裂源自焊缝中间的化合物相上,断口呈脆性断裂特征。
The single crystal superalloy DD6 was bonded by vacuum brazing at 1070℃ for 15min using the BNi82CrSiB filler metal. The sound joint was obtained. The result showed that the elements of the filler metal did not diffused into the base metal. At 750℃, the joint tensile strength reached about 400MPa, and the stress-rupture strength of 750℃/100h was 100MPa. The rupture of joint originated from the compound phases in the central part of the brazing seam, and the tested samples exhibited brittle fracture.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2007年第5期3-6,共4页
Journal of Materials Engineering
