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研究了H13钢和H11钢在680℃热铝合金液中浸蚀1、3和5 h的腐蚀过程。结果表明:随浸蚀时间延长,两种钢均从局部腐蚀扩展为全面腐蚀,且钢材质量损失逐渐增大,但H13钢受浸蚀影响更大,当浸蚀5 h时,H13钢损失17.58 g,而H11钢仅损失2.68 g。两种材料的腐蚀均开始于α铁素体的位置,5 h后与铝合金界面均出现复合层过渡区,H13钢表面形成3重复合层形貌,且过渡区平均厚度为100μm,H11钢表面形成两重复合层形貌,且过渡区平均厚度为210μm。
The corrosion of H13 steel and H11 steel at 680 ℃ for 1, 3 and 5 h was studied. The results show that with the prolongation of etching time, both steels extend from local corrosion to full corrosion and the mass loss of steel increases gradually. However, the corrosion of H13 steel is more affected by the erosion. When the steel is eroded for 5 h, the loss of H13 steel is 17.58 g, while H11 steel lost only 2.68 g. The corrosion of both materials began at α-ferrite. After 5 h, the composite layer transitional zone appeared on the interface with the aluminum alloy. The surface of H13 steel formed three-layer composite morphology with an average thickness of 100 μm in the transition zone. The surface of the double composite layer morphology, and the transition zone average thickness of 210μm.