19-09-2013 дата публикации
Номер: US20130240520A1
An energy-storing container is made of a lightweight steel having the following chemical composition (in wt %): C 0.04-2%; Mn 14-30%; Al 1.5-12%; Si 0.3-3%; Cr 0.12-6%, and additionally one or more of the following elements: Ti, V, Nb, B, Zr, Mo, Ni, Cu, W, Co, P, N, each at up to 5% and in total at up to 10%, wherein the remainder is Fe including common steel tramp elements, wherein the concrete alloy composition is selected in order to limit the a′-martensite fraction before or after a forming process to no more than 3%, with the stipulation that the a′-martensite equivalent according to 0.1*wt % Mn+wt % C+0.05*wt % Si is between 3.4 and 10.5. 16.-. (canceled)7. An energy-storing container made of a lightweight steel with the following chemical composition (in wt %):C 0.04-2%Mn 14-30%Al 1.5-12%Si 0.3-3%Cr 0.12-6%,one or more elements selected from Ti, V, Nb, B, Zr, Mo, Ni, Cu, W, Co, P, and N, each up to 5% and in total up to 10%, wherein the remainder is Fe including common steel tramp elements, wherein the steel has an α′-martensite content before or after a deformation of the steel of maximally 3%, wherein an α′-martensite equivalent according to0.1*wt % Mn+weight % C*wt % Al+0.05*wt % Siis between 3.4 and 10.5.8. The Energy-storing container of claim 8 , wherein the Cr content is in the range from 2 to 6%.9. The energy-storing container of claim 8 , wherein the Cr content is in the range from 0.12 to <2%.10. The energy-storing container of claim 8 , wherein the light construction steel used for manufacturing has a triplex structure with finely distributed kappa carbides and the following chemical composition (in wt %):C 0.5-1.2%Mn 14-22%Al 6-10%Si 0.3-3%Cr<4%.11. A lightweight steel for use for an energy-storing container with (in wt %):C 0.04-2%Mn 14-30%Al 1.5-12%Si 0.3-3%Cr 0.12-6%,one or more elements selected from Ti, V, Nb, B, Zr, Mo, Ni, Cu, W, Co, P, and N, each up to 5% and in total up to 10%, wherein the remainder is Fe including common steel tramp ...
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