Microstructures, Heat Treatment, and Properties of Boron‐Alloyed Tool Steels
Microstructures, Heat Treatment, and Properties of Boron‐Alloyed Tool Steels
复制标题
硼合金工具钢的显微组织、热处理和性能
DOI：
10.1002/srin.201900416
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发表时间：
2020
影响因子：
2.2
通讯作者：
W. Theisen
中科院分区：
文献类型：
--
作者：
J. Lentz;A. Röttger;W. Theisen
为了开发新型Fe-C-B-Cr和Fe-C-B-Cr-Mo冷作工具钢，研究了亚共晶实验室熔体的显微组织和硬度回火行为。结果表明，随着Cr含量的增加，超硬M2 B硼化物的热力学稳定性增强。通过调节B/（C + B）比、Cr含量和渗碳温度来抑制碳硼化物的形成。在500 °C下的二次硬化性通过添加Mo来实现。此外，Mo使M23（C，B）6相稳定，并且在较高含量下使M3 B2硼化物稳定。在此基础上，受X153 CrMoV 12 - 1钢微观组织的启发，设计了Fe 0. 4C 1B-Cr合金，其特征在于α′-Fe可硬化基体，但15体积%的共晶M2 B硼化物代替M7 C3用于磨损保护。采用铸造、热轧、粉末冶金和热等静压工艺生产了Fe 0. 4C 1B-Cr钢。研究了其（摩擦学）机械性能，并与X153 CrMoV 12 - 1进行了比较。新型Fe 0. 4C 1B-Cr合金的断裂韧性、弯曲强度、耐磨性和硬度与X153 CrMoV 12 - 1钢相似或上级，但材料成本更低。
To enable the development of novel Fe–C–B–Cr and Fe–C–B–Cr–Mo cold work tool steels, the microstructures and hardness‐tempering behaviors of hypoeutectic laboratory melts are investigated. The results show that increasing Cr content enhances the thermodynamic stability of the ultrahard M2B borides. The formation of carboborides is suppressed by adjusting the B/(C + B) ratio, Cr content, and austenitization temperature. A secondary hardenability at 500 °C is achieved by Mo addition. In addition, Mo stabilizes the M23(C,B)6phase and at higher contents the M3B2boride. Based on these investigations, Fe0.4C1B–Cr alloys are designed which, inspired by the microstructure of the steel X153CrMoV12‐1, feature a α′‐Fe hardenable matrix but 15 vol% of eutectic M2B borides instead of M7C3for wear protection. The Fe0.4C1B–Cr steels are produced by casting and hot rolling as well as powder metallurgy and hot isostatic pressing. The (tribo‐) mechanical properties are investigated and compared with X153CrMoV12‐1. Fracture toughness, bending strength, wear resistance, and hardness of the novel Fe0.4C1B–Cr alloys are found to be similar or superior to the steel X153CrMoV12‐1, at decreased material cost.
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影响因子：
8.4
作者：
Lentz, Jonathan;Roettger, Arne;Theisen, Werner
通讯作者：
Theisen, Werner
哈特斯托菲根沙夫滕数据集
影响因子：
1.1
作者：
C. Friedrich;G. Berg;E. Broszeit;Christina Berger
通讯作者：
Christina Berger
影响因子：
9.4
作者：
Lentz, Jonathan;Roettger, Arne;Theisen, Werner
通讯作者：
Theisen, Werner
影响因子：
9.4
作者：
Lentz, Jonathan;Roettger, Arne;Theisen, Werner
通讯作者：
Theisen, Werner
Hartlegierungen 和 Hartverbundwerkstoffe
影响因子：
5.2
作者：
H. Berns
通讯作者：
H. Berns