Analysis method for surface adhesion of hot-dip galvanized ultra-high strength steel
A hot-dip galvanized, ultra-high-strength steel technology, applied in analytical materials, preparation of test samples, instruments, etc., can solve the problem of inability to accurately locate the failure position, and achieve the effect of improving efficiency, facilitating automation, and realizing automation
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Embodiment 1
[0022] In this example, see Figure 1 ~ Figure 3 , a method for analyzing surface adhesion in hot-dip galvanized ultra-high-strength steel, the matrix material chemical composition of hot-dip galvanized ultra-high-strength steel is 0.2C-1.8Si-2.6Mn-Fe (wt%), in order to prepare for The cross-sectional samples analyzed by TEM were pretreated, torn and extracted using helios600 focused ion beam (FIB) equipment, the steps are as follows:
[0023] Step 1: Take the hot-dip galvanized ultra-high-strength steel as the sample to be tested, conduct pre-oxidation-reduction annealing process on the sample to be tested, heat it to 800°C at 5°C / s, keep it for 60s, and then cool to 460°C for heat treatment. Dip galvanized, take out the sample after 3s and cool to room temperature to obtain a sample containing galvanized layer;
[0024] Step 2: Place the sample obtained in Step 1 in a double-beam focused ion beam device, deposit the Pt protective metal on the surface of the sample, and then...
Embodiment 2
[0031] This embodiment is basically the same as Embodiment 1, especially in that:
[0032] In this embodiment, a method for analyzing the surface adhesion of hot-dip galvanized ultra-high-strength steel, the chemical composition of the base material of hot-dip galvanized ultra-high-strength steel is 0.2C-1.8Si-2.6Mn-Fe (wt%), In order to prepare cross-sectional samples for TEM analysis, a helios600 focused ion beam (FIB) device was used for pretreatment, tearing and extraction of samples, and the steps are as follows:
[0033] Step 1: This step is the same as Embodiment 1;
[0034] Step 2: Place the annealed sample in a double-beam focused ion beam device, deposit chromium protective metal on the surface of the sample, and then stagger a certain distance to deposit metal chromium for the second time, so that it extends from the edge of the first layer of chromium. 5 μm to form the edge of the overhanging metal layer; and set the ion beam voltage of the double-beam focused ion...
Embodiment 3
[0041] This embodiment is basically the same as the previous embodiment, and the special features are:
[0042] In this embodiment, a method for analyzing the surface adhesion of hot-dip galvanized ultra-high-strength steel, the chemical composition of the base material of hot-dip galvanized ultra-high-strength steel is 0.2C-1.8Si-2.6Mn-Fe (wt%), In order to prepare cross-sectional samples for TEM analysis, a helios600 focused ion beam (FIB) device was used for pretreatment, tearing and extraction of samples, enabling high-throughput detection and performance characterization of batch samples. The method of this embodiment can quickly and conveniently detect the surface adhesion of hot-dip galvanized ultra-high-strength steel, which is convenient for automation and can improve the efficiency of batch detection experiments and analysis.
[0043] In summary, the steps of the method for analyzing the surface layer adhesion of hot-dip galvanized ultra-high-strength steel in the ab...
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