当前位置：
X-MOL 学术
›
Steel Res. Int.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Microstructures and Properties of T1 High‐Speed Steel Modified by In Situ Fe–Cr–Ti–C–N Nanocomposite Inoculants
Steel Research International ( IF 1.9 ) Pub Date : 2020-10-16 , DOI: 10.1002/srin.202000367 Lina Bai 1, 2 , Chunxiang Cui 1 , Tiebao Wang 1 , Jinhua Ding 1 , Qiangxiong Zhang 1
Steel Research International ( IF 1.9 ) Pub Date : 2020-10-16 , DOI: 10.1002/srin.202000367 Lina Bai 1, 2 , Chunxiang Cui 1 , Tiebao Wang 1 , Jinhua Ding 1 , Qiangxiong Zhang 1
Affiliation
|
A Fe‐based nanocrystalline inoculant is designed and prepared via in situ synthesis based on material thermodynamics, where mechanical grinding in a ball grinder and heating in a vacuum tube furnace are important steps. The microstructure and mechanical properties of T1 high‐speed steel (T1 HSS) with and without addition of the inoculant are investigated using high‐resolution transition electron microscopy (HRTEM), scanning electron microscopy (SEM), X‐ray diffraction (XRD), and Vickers hardness testing (VHT). The Cr7C3 particles in the inoculant near the grain boundary of the Fe3W3C phase serve as a base for martensite and M6C heterogeneous nucleation, thereby increasing the nucleation rate and refining the matrix structure. The T1 HSS with the added inoculant exhibits superior hardness, impact toughness, and wear resistance after tempering treatment compared with the uninoculated control, where the hardness increases from 62.3 to 65.7 HRC with inoculation. Furthermore, the wear rate decreases from 0.0704% to 0.0551%, and the impact energy of T1 HSS after inoculation increases from 36.75% to 22.0638 J cm−2 under the same experimental conditions.
中文翻译：
原位Fe–Cr–Ti–C–N纳米复合孕育剂改性的T1高速钢的组织和性能
基于材料热力学的原位合成可以设计和制备铁基纳米晶孕育剂，其中球磨机中的机械研磨和真空管炉中的加热是重要的步骤。使用高分辨率过渡电子显微镜（HRTEM），扫描电子显微镜（SEM），X射线衍射（XRD），添加和不添加孕育剂的T1高速钢（T1 HSS）的组织和力学性能进行了研究和维氏硬度测试（VHT）。Fe 3 W 3 C相晶界附近孕育剂中的Cr 7 C 3颗粒是马氏体和M 6的基础C异质成核，从而增加了成核速率并细化了基质结构。与未接种的对照组相比，添加了接种剂的T1 HSS在回火处理后显示出优异的硬度，冲击韧性和耐磨性，未接种的对照组的硬度从接种后的62.3 HRC增加到65.7 HRC。此外，在相同的实验条件下，磨损率从0.0704％降低至0.0551％，并且接种后的T1 HSS的冲击能从36.75％增加至22.0638 J cm -2。
更新日期：2020-10-16
中文翻译：
原位Fe–Cr–Ti–C–N纳米复合孕育剂改性的T1高速钢的组织和性能
基于材料热力学的原位合成可以设计和制备铁基纳米晶孕育剂，其中球磨机中的机械研磨和真空管炉中的加热是重要的步骤。使用高分辨率过渡电子显微镜（HRTEM），扫描电子显微镜（SEM），X射线衍射（XRD），添加和不添加孕育剂的T1高速钢（T1 HSS）的组织和力学性能进行了研究和维氏硬度测试（VHT）。Fe 3 W 3 C相晶界附近孕育剂中的Cr 7 C 3颗粒是马氏体和M 6的基础C异质成核，从而增加了成核速率并细化了基质结构。与未接种的对照组相比，添加了接种剂的T1 HSS在回火处理后显示出优异的硬度，冲击韧性和耐磨性，未接种的对照组的硬度从接种后的62.3 HRC增加到65.7 HRC。此外，在相同的实验条件下，磨损率从0.0704％降低至0.0551％，并且接种后的T1 HSS的冲击能从36.75％增加至22.0638 J cm -2。
京公网安备 11010802027423号