Composition equivalents of stainless steels understood via gamma stabilizing efficiency.

Composition equivalents of stainless steels understood via gamma stabilizing efficiency.
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DOI:
10.1038/s41598-021-84917-z
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发表时间:
2021-03-08
期刊:
影响因子:
4.6
通讯作者:
Dong C
Dong C
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Zhang S;Wang Q;Yang R;Dong C

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不锈钢的相类型通常通过主要奥氏体 (γ) 或铁素体 (α) 稳定剂 Ni 或 Cr 的等效方程来预测。本文试图通过分隔 γ 和 γ + α 相区的相界线的斜率来了解不锈钢中的等效方法。在分析了一百多种常见不锈钢后,使用合金元素的斜率除以镍或铬的斜率可以很好地解释流行的等效系数。与传统的组合物当量分别评估γ稳定剂和α稳定剂不同;新的等效方案为不锈钢中的所有合金元素提供了统一的相稳定参数。该参数定义为γ稳定效率。其负号或正号表示γ稳定剂或α稳定剂,其值代表稳定效率。
The phase-type of a stainless steel is generally predicted by equivalent equations in terms of a major austenitic (γ) or ferritic (α) stabilizer Ni or Cr. The present paper attempts to understand the equivalent methods in stainless steels via the slopes of the phase boundary lines separating γ and γ + α phase zones. The prevailing equivalent coefficients are well interpreted using the slope ratios of the alloying elements divided by that of Ni or Cr, after analyzing over one hundred common stainless steels. Different from traditional composition equivalents which evaluate γ stabilizers and α stabilizers separately; the new equivalent scheme provides a unified phase stabilizing parameter for all alloying elements in stainless steels. This parameter is defined as γ stabilizing efficiency. Its negative or positive sign indicates γ stabilizer or α stabilizer, and its value represents the stabilizing efficiency.
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