一种中锰钢的合金化和热处理效果

IF 3 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materialia Pub Date : 2025-05-24 DOI:10.1016/j.mtla.2025.102444

D.M. Field, D.J. Magagnosc, M.C. Rupinen

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引用次数: 0

摘要

将10Mn-0.15C-2Al （wt. %）钢按顺序与Mo、B、V和Cu合金化，以确定合金添加和热处理对钢的组织和性能的影响。受合金含量和临界间退火温度影响的奥氏体体积分数和稳定性对室温准静态拉伸和Charpy v型缺口（CVN）冲击性能的影响最大。当CVN测试在-40°C时进行时，冲击性能与奥氏体无关，平均产生74±4 J，除了基合金在-40°C时具有28j的极低韧性。通过Ghosh-Olson马氏体模型计算，奥氏体分数受奥氏体的热力学稳定性控制。最后，考虑了显微组织对韧性指标的影响，发现残余奥氏体的增加并不一定能提高韧性。

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Alloying and heat treatment effect on a medium-Mn steel

A base 10Mn-0.15C-2Al (in wt. %) steel was sequentially alloyed with Mo, B, V, and Cu to identify the effects of both alloying addition and heat treatment on the microstructure and properties of the steel. The volume fraction and stability of the austenite as influenced by alloy content and intercritical annealing temperature produced the greatest effect on room temperature quasi-static tensile and Charpy V-notch (CVN) impact properties. When CVN testing was performed at -40 °C the impact properties were independent of austenite and produced an average of 74 ± 4 J apart from the Base alloy that had exceptionally low toughness of 28 J at -40 °C. The austenite fractions were shown to be controlled by the thermodynamic stability of the austenite as calculated through the Ghosh-Olson martensite model. Finally, the effect of microstructure on toughness metrics was considered and it was found that increased retained austenite did not always provide increased toughness.

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来源期刊

Materialia MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

6.40

自引率

2.90%

发文量

345

审稿时长

36 days

期刊介绍： Materialia is a multidisciplinary journal of materials science and engineering that publishes original peer-reviewed research articles. Articles in Materialia advance the understanding of the relationship between processing, structure, property, and function of materials. Materialia publishes full-length research articles, review articles, and letters (short communications). In addition to receiving direct submissions, Materialia also accepts transfers from Acta Materialia, Inc. partner journals. Materialia offers authors the choice to publish on an open access model (with author fee), or on a subscription model (with no author fee).