耐熱合金 Inco. 713C の TLP Bonding に関する研究 : 組織およびクリープ強さについて

概要

論文の詳細を見る
Structure and mechanical properties of heat resistant superalloy Inoc. 713C joint bonded by TLP (transient liquid phase) method being a new diffusion bonding process have been investigated fundamentally. Bonding was carried out by using insert metal (Ni-15Cr-3.5B) in a vacuum induction furnace, following by subsequent post heat treatment in order to promote homogenization in compositions. The following results were obtained. 1. With increasing the bonding temperature and time, the structure at the bonded interface was improved and became similar to that of the base metal. On the other hand, when bonding was achieved in relatively low pressure, grain coarsening occurred near the bonded interface, on the contrary, the bonded interface made in the high pressure seemed to remain as grain boundary. 2. In bonding for about an hour, the constitution of the bonded interface considerably resembled that of the base metal. 3. Solidification time of insert metal estimated from diffusion state of boron was approximately agreed with the result of structure observation. 4. By selecting the suitable bonding conditions, tensile strength was easily equivalent to the base metal and also fairly good results about the creep strength were obtained though scattering somewhat.
社団法人溶接学会の論文
1978-03-05