CAJ | 학술논문

　　研究金属间化合物对过渡接头耐热性的影响，采用镍中间层的钛与不锈钢热轧焊接头的焊后热处理方法，研究焊后热处理引起的连接界面微观组织演变。结果表明：当热处理温度为600~800°C，热处理时间为10 min和30 min时，在不锈钢与镍的连接界面处没有发生明显的互扩散。但是，当热处理温度为700°C热处理时间为30 min时，在不锈钢与镍的连接界面出现微裂纹。热处理温度为600°C时，镍与钛合金的连接界面的金属间化合物层的厚度增大，而热处理温度为700和800°C时，界面出现微裂纹。微裂纹产生在金属间化合物层之间或者是金属间化合物层与镍层之间。过渡接头的拉伸强度随着热处理温度的升高或时间的延长而降低。
　　연구금속간화합물대과도접두내열성적영향，채용얼중간층적태여불수강열알한접두적한후열처리방법，연구한후열처리인기적련접계면미관조직연변。결과표명：당열처리온도위600~800°C，열처리시간위10 min화30 min시，재불수강여얼적련접계면처몰유발생명현적호확산。단시，당열처리온도위700°C열처리시간위30 min시，재불수강여얼적련접계면출현미렬문。열처리온도위600°C시，얼여태합금적련접계면적금속간화합물층적후도증대，이열처리온도위700화800°C시，계면출현미렬문。미렬문산생재금속간화합물층지간혹자시금속간화합물층여얼층지간。과도접두적랍신강도수착열처리온도적승고혹시간적연장이강저。
The effect of intermetallic compounds on the heat resistance of transition joint was investigated. The experiment of post-weld heat treatment for the hot roll bonded titanium alloy?stainless steel joint using nickels interlayer was carried out, and the interface microstructure evolution due to heat treatment was presented. There was not found significant interdiffusion at stainless steel/nickel interface, when the specimens were heat treated in the temperature range of 600?800 °C for 10 and 30 min, while micro-cracks occurred at the stainless steel/nickel interface heat treated at 700 °C for 30 min. The thickness of intermetallic layers at nickel/titanium alloy interface increased at 600 °C, and micro-cracks occurred at 700 and 800 °C. The micro-cracks occurred between intermetallic layers or between intermetallic layer and nickel interlayer as well. The tensile strength of the transition joint decreased with the increase of heat treatment temperature or holding time.