TLP连接对一种镍基单晶高温合金拉伸性能的影响  

Influence of TLP Bonding on the Tensile Properties for a Kind of Nickel-Based Single Crystal Superalloy

作　　者：刘纪德[1] 金涛[1] 赵乃仁[1] 王志辉[1] 刘金来[1] 孙晓峰[1] 管恒荣[1] 胡壮麒[1] 

机构地区：[1]中国科学院金属研究所,辽宁沈阳110016

出　　处：《稀有金属材料与工程》2007年第2期332-334,共3页Rare Metal Materials and Engineering

基　　金：国家自然科学基金资助(50474058)

摘　　要：采用Ni-Cr-B非晶中间层瞬间液相连接(Transient liquid phase bonding)一种镍基单晶高温合金DD98,TLP连接在1230℃,8h真空条件下进行。利用扫描电镜进行微观组织观察和成分分析。在不同温度对接头与母材进行了拉伸实验。实验结果表明:接头的微观组织和化学成分与母材趋于一致;接头强度达到母材的标准,其它性能指标与母材相当,二者的应力-应变关系相同。A kind of nickel-base single crystal superalloy DD98 was bonded with transient liquid phase （TLP） bonding process by using Ni-Cr-B amorphous foil. The TLP bonding was carried out at 1230℃ for 8 h in vacuum. The tensile properties of TLP bonds and matrix were examined. The results show that the microstructure and composition of the bonded zone are similar to those of the substrate. The tensile strength of TLP joints indicates the identical level of base metal, and the other tensile properties are almost the same as those of the base metal. The stress-strain curves of the TLP bonds are similar to the base metal.

关 键 词：DD98单晶高温合金 TLP连接 拉伸性能 

分 类 号：TG132.32[一般工业技术—材料科学与工程]