Speaker
Pinghuai Wang
(Southwestern Institute of Physics)
Description
The CuCrZr/316L(N) explosion bonding bimetallic plates were used to make hypervapotron (HVT) cooling channel for the fingers, which is the key components of the ITER First Wall (FW). The bimetallic plates will be subjected to the same thermal cycles as the FW component, including the HIP (hot iso-static pressing) joining for bonding HVT and beryllium tiles, thus the properties of both the CuCrZr /316L(N) joints and the CuCrZr alloy will be changed even cannot meet the design requirement.
Several batches of CuCrZr/316l(N)-IG joints were obtained by explosion bonding. Visual test and ultrasonic examination were conducted for the explosion bonding plates, samples were cut from the plate in different conditions for the tensile testing, metallographic examination (microscopic and macroscopic) and hardness testing. The results shows that a solid solution annealing heat treatment was necessary to recover the tensile strength of CuCrZr alloy as well as the deformation of CuCrZr /316L(N) joint interface so that the risk of stress inducing corrosion will be significantly reduced. In addition, the optimization of manufacturing process for the CuCrZr/316L(N) bimetallic plates and the HIP parameter will benefit the properties control of the materials.
Co-authors
Danhua Liu
(Southwestern Institute of Physics, Chengdu, China)
Jiming Chen
(Southwestern Institute of Physics, Chengdu, China)
Pinghuai Wang
(Southwestern Institute of Physics, Chengdu, China)
Qian Li
(Southwestern Institute of Physics, Chengdu, China)
