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运用金相和扫描电镜检验爆炸焊接TA2/1Cr18Ni9Ti过渡接头结合界面,出示了有关结果。具有与TA2等强的钛-不锈钢接头表现出有别于一般爆炸焊接界面的特别形态:波长、波幅小,波幅与波长比值大,钛内绝热剪切滑移根轻微;断口分析表明,断裂发生在极接近界面的钛层内。疲劳裂纹起源于试样外表面,顺波峰(波谷)传播,不横切波形,因此,裂纹是否产生与界面波在试样表面露头时的状况密切相关,裂纹传播快慢则取决于一定截面上波的数目和沿波分布的化合物、夹杂等缺陷的数量和形态。小波纹结合具有最好的强度。
Metallographic and scanning electron microscopy tests of the explosive welding TA2 / 1Cr18Ni9Ti transition joint bonding interface show the results. Titanium-stainless steel joints with strong TA2 showed special morphology different from that of the general explosive welding interface: small wavelength, small amplitude, large ratio of amplitude to wavelength, slight slipped root of adiabatic shear in titanium; fracture analysis showed that fracture occurred Very close to the interface of the titanium layer. The fatigue crack originates from the outer surface of the sample and propagates along the wave crest (trough) without cross-cutting the waveform. Therefore, whether the crack is generated is closely related to the situation when the interface wave emerges from the sample surface. The crack propagation depends on the wave The number and morphology along the wave distribution of compounds, inclusions and other defects. Small corrugated combination has the best strength.