2022
DOI: 10.3390/ma15072539
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A New Alloying Concept for Low-Density Steels

Abstract: This paper introduces a new alloying concept for low-density steels. Based on model calculations, samples—or “heats”—with 0.7 wt% C, 1.45 wt% Si, 2 wt% Cr, 0.5 wt% Ni, and an aluminium content varying from 5 to 7 wt% are prepared. The alloys are designed to obtain steel with reduced density and increased corrosion resistance suitable for products subjected to high dynamic stress during operation. Their density is in the range from 7.2 g cm−3 to 6.96 g cm−3. Basic thermophysical measurements are carried out on … Show more

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Cited by 3 publications
(6 citation statements)
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“…For the experimental program, high-strength medium manganese steel with a carbon content of 0.2%, manganese 5% and aluminium 3 wt% was chosen (Table 1). Manganese as an austenite stabilizing element significantly reduces the fraction of ferrite because it shifts the transformation of austenite to ferrite in the CCT diagram to the right [1,7,9]. Manganese also causes together with silicon strengthening of the solid solution and retard carbide precipitation [2,10].…”
Section: Experimental Programmentioning
confidence: 99%
“…For the experimental program, high-strength medium manganese steel with a carbon content of 0.2%, manganese 5% and aluminium 3 wt% was chosen (Table 1). Manganese as an austenite stabilizing element significantly reduces the fraction of ferrite because it shifts the transformation of austenite to ferrite in the CCT diagram to the right [1,7,9]. Manganese also causes together with silicon strengthening of the solid solution and retard carbide precipitation [2,10].…”
Section: Experimental Programmentioning
confidence: 99%
“…To accomplish this, they may seek new and alternative materials, e.g. springs with possible weight reduction [1] or quenched spring steel with the contribution of Cu precipitation hardening [2]. But also optimize or even completely change the manufacturing technology [3][4][5].…”
Section: Introductionmentioning
confidence: 99%
“…However, the stability of ferrite is undesirable for the future modification of mechanical properties by heat treatment. It is, therefore, necessary to compensate for the high alumina content with austenite-forming elements, such as Mn and C. In this way, a fully austenitic structure can be achieved, at least, at higher temperatures, thus achieving suitable sub-conditions for heat treatment [ 3 , 15 ].…”
Section: Introductionmentioning
confidence: 99%
“…Our concept assumes the high thermal stability of the structure combined with heat treatment. Another benefit will be higher corrosion resistance, which is inherently typical for aluminium alloy steels [ 15 ].…”
Section: Introductionmentioning
confidence: 99%
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