The anisotropic deformation behaviour of ZrB2 grains of basal and prismatic orientations in a polycrystalline ZrB2 sample was studied during in-situ micropillar compression at room temperature (RT), 350 ☌ and 500 ☌. This work will enhance the understanding of the anisotropy dependence of material removal and damage mechanisms, and provide a guide for achieving high-efficiency and low-damage machining of GaN crystals.

The higher stress along zone axis induced more phase transition from hexagonal system to cubic system. The processing along zone axis was more conducive to achieve the plastic removal and deformation, deeper penetration depth and less phase transformation. As the stress increases, special surface radial cracks with the same orientations caused by shear stress will appear on the groove surface, and striated and step-shaped brittle fractures can be induced by the propagation and intersection of the cracks. The results showed that crack-free plastic deformation of GaN crystals could be acquired along different zone axes, which was dominated by phase transition, polycrystalline nanocrystals, amorphous transition, as well as close-to-atomic scale damages including stacking faults, dislocations and lattice distortions. Nanoscratch tests of GaN single crystals was conducted on (0001) plane along different zone axes, and the anisotropy dependence of material removal and deformation behaviors were investigated systematically. This will pay big dividends when it's time to provide material for your NCOER or even a quarterly award.Gallium nitride single crystal (GaN) is difficult to achieve high-efficiency and low-damage machining due to anisotropy, high hardness and brittleness. Whatever method you choose, just make sure you do it regularly. Or make a habit of recording your accomplishments when you have some other writing requirement, like a weekly report or weekly checks. The best way to do this is to develop a habit that works for you -like every Friday after lunch, write down what you accomplished during the week. You can be the best troop in the world but if you can't remember what you've accomplished, it's the same as if you didn't do anything. Write down your accomplishments as they occur so that you can remember them when it comes time to provide material for your NCOER. Do this as soon as possible because it takes time to change behavior and even longer for others to become aware of it. Supervisors love that.įill out an NCOER on yourself and see what areas are rated and which areas might be improved. Follow up periodically and don't hesitate to ask for further advice. Try to read between the lines and ask questions if their meaning isn't clear.

Often, it's difficult for supervisors to directly criticize their troops and they may offer advice in a tone that sounds more like a suggestion than an order. This may be the single most effective step you can take and can't be over-emphasized.

Ask him or her how you're doing and what you can do to improve. Talk with your supervisor about your NCOER. Target areas that provide the most points first. Don't waste time on areas that you can't control and concentrate on those that you can. Understanding how the process works is the first step in improving your score. Make sure you give it the attention it deserves. Because you can determine what is written in your evaluation! Your actions and the information you provide with make your supervisors job easier and your report the best it can be. It's as if your supervisor gave you a blank check and said, fill it in with whatever amount you want. The good thing is that the content of your NCOER is in your hands.

No other document has as much effect on your career or your life. That single sheet of paper affects your chances for promotion, your assignment options, training opportunities, and your entire future in the Army. Your NCOER is probably the single most important document you'll encounter in your military career. Because promotions, assignments and other personnel actions are decided by people who don't know you based on your records. It will be as if everything you did never happened. No matter how hard you work or how many hours you put in, all your work will be for nothing if your achievements aren't recorded in your annual evaluation.

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