A quantitative investigation of the effect of Mn segregation on microstructural properties of quenching and partitioning steels

Farideh HajyAkbary, Jilt Sietsma, Roumen H. Petrov, Goro Miyamoto, Tadashi Furuhara, Maria Jesus Santofimia

研究成果: ジャーナルへの寄稿学術論文査読

48 被引用数 (Scopus)

抄録

Quenching and partitioning (Q&P) process of a 0.3C-1.3Si-3.2Mn (wt%) steel with Mn segregation is studied experimentally and theoretically. During initial quenching a higher fraction of martensite forms in Mn-poor regions compared to Mn-rich regions. In the partitioning process, austenite in Mn-poor regions is surrounded with a higher fraction of martensite than austenite in Mn-rich regions and therefore receives a larger amount of carbon. When carbon partitioning is not sufficient to stabilize austenite, a higher fraction of martensite forms, during final quenching, in Mn-poor regions. Lowering the quenching temperature in the Q&P process reduces inhomogeneity in the distribution of phases.

本文言語英語
ページ(範囲)27-30
ページ数4
ジャーナルScripta Materialia
137
DOI
出版ステータス出版済み - 2017 8月 1

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