The effect of low-cycle alternating bending at room temperature on the crystallographic texture, metallographic structure, and elastic properties of sheets of MgLi5 (mass) magnesium alloy after warm cross-rolling has been studied. Texture of alloy is differed from the texture of pure magnesium. The initial texture of alloy is characterized by a wide scatter of basal poles in the transverse direction. In the process of alternating bending, the changes in the initial texture and structure (which is represented by equiaxed grains containing twins) lead to regular changes in the anisotropy of elastic properties.
Relevance: The theme of machine components case-hardening when heated by a laser ray has been and remains currently relevant. Laser case-hardening is characterized by a number of exclusive advantages: hardening of hard-to-reach surfaces, ensuring local hardening, including “spot” one when a continuous layer of fragile material vulnerable to cracking and destruction doesn’t form; the lack of deformations and warping of processed parts as well as finishing operations; getting desired properties both mechanical and chemical ones by introducing different elements in the uppermost layer of a product at its melting by a laser ray, i.e. at implementing laser alloying.
127ChemInform Abstract The dichloropropanol (II) is coupled with N,N"-dibenzylidenediethylenetriamine (I) to give the tetrakis(2-aminoethyl)diaminopropane (III) after acidic work-up. Reaction of (III) with chloroacetic acid (IV) produces the title compound (V). (Dissociation constants, stability constants of some metal complexes).
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