Martensitic transformation and physical properties of ‘steel–TiNi’ bimetal composite, produced by explosion welding
Martensitic transformation and physical properties of ‘steel–TiNi’ bimetal composite, produced by explosion welding
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DOI：
10.1080/01411591003656757
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发表时间：
2010-04
影响因子：
1.6
通讯作者：
S. Belyaev;V. Rubanik;N. Resnina;O. Rubanik;V. Borisov
中科院分区：
文献类型：
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作者：
S. Belyaev;V. Rubanik;N. Resnina;O. Rubanik;V. Borisov
本文研究了爆炸焊接法制备的TiNi-不锈钢复合材料的组织和马氏体相变。结果表明，化学元素的混合物在靠近接头的6 µm的非常窄的间隔内观察到-距离TiNi侧2 µm，距离钢侧4 µm。接头附近的显微硬度在60 μm的区间内呈非单调分布。不锈钢与TiNi板的爆炸焊接连接导致马氏体相变动力学的显著变化。相变温度和相变温度区间增大，热转变温度降低。500°C退火2 h后，复合材料的显微硬度变化区间减小，相变动力学部分恢复。
The aim of this work is an investigation of structure and martensitic transformation in bimetal composite ‘TiNi–stainless steel’ produced by explosion welding. The results have shown that the mixture of chemical elements is observed in very narrow intervals of 6 µm close to the joint – 2 µm from the TiNi side and 4 µm from the steel one. Micro-hardness distribution in the vicinity of the joint is non-monotonic in the interval of 60 µm. Connection of stainless steel and TiNi plates by explosion welding leads to a dramatic change of martensitic transformation kinetics. Temperatures and the temperature interval of phase transformation increase strongly and heat transformation decreases. Annealing at 500°C for 2 h of bimetal composite decreases the interval of micro-hardness variation and partially recovers kinetics of phase transitions.