Effects of niobium addition on microstructure and properties of CPM121 powder metallurgy high-speed steel
Effects of niobium addition on microstructure and properties of CPM121 powder metallurgy high-speed steel
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添加铌对CPM121粉末冶金高速钢组织与性能的影响
DOI：
10.1007/s11771-021-4690-1
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发表时间：
2021-04
影响因子：
4.4
通讯作者：
He Yuehui
中科院分区：
文献类型：
--
作者：
Zhang Qiankun;Li Suwang;Xiao Yifeng;Wu Liang;Qian Jinwen;Chen Zemin;Shen Weijun;Lin Nan;He Yuehui
【摘要】：粉末冶金高速钢(PM HSS)中大量添加钒作为硬质相导致成本较高且切削加工性较差。本研究以CPM121(10W-5Mo-4Cr-10V-9Co,wt.%)为基本成分,采用预氧化和碳化物球混合元素和碳化物球混合元素直接压实并活化烧结成接近全密度(>99.0%)。铌合金钢(w(V)+w(Nb)=10 wt.%)具有较高的硬度和耐磨性、优异的二次硬化能力和抗回火能力。但过量的铌添加(>5 wt.%)会导致碳化物粗大化和韧性变差。EPMA结果证明铌倾向于分布在MC碳化物中，迫使W元素形成M6C和WC碳化物。此外，旋转锻造的作用对铌合金钢(S3)的性能进行了研究，经过40%变形量的旋锻后，铌合金钢的弯曲强度和断裂韧性比未经旋锻的S3样品分别进一步提高了20.74%和43.86%。
Massive vanadium additions as hard phases in powder metallurgy high-speed steels (PM HSS) lead to higher cost and bad machinability.In this study,ultrahigh alloy PM HSS with CPM121 (10W-5Mo-4Cr-10V-9Co,wt.%) as the basic composition,was directly compacted and activation sintered with near-full density (>99.0%) using pre-oxidized and ball-mixed element and carbide powders.Niobium-alloyed steels (w(V)+w(Nb)=10 wt.%) show higher hardness and wear resistance,superior secondary-hardening ability and temper resistance.But excess niobium addition (>5 wt.%) leads to coarsened carbides and deteriorated toughness.EPMA results proved that niobium tends to distribute in MC carbides and forces element W to form M6C and WC carbides.Further,the role of rotary forging on properties of niobium-alloyed steels (S3) was researched.After rotary forging with deformation of 40%,the bending strength and fracture toughness of niobium-alloyed steels could be further improved by 20.74% and 43.86% compared with those of sample S3 without rotary forging,respectively.
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影响因子：
1.4
作者：
C. Zhou;J. R. Moon;S. Peacock
通讯作者：
C. Zhou;J. R. Moon;S. Peacock
DOI：
10.1007/bf02669147
发表时间：
1993-10
期刊：
Journal of Phase Equilibria
影响因子：
--
作者：
V. Raghavan
通讯作者：
V. Raghavan
影响因子：
--
作者：
O. Grinder
通讯作者：
O. Grinder
影响因子：
8.4
作者：
Qiankun Zhang;Jiang Yao;Wei-jun Shen;Huibin Zhang;Yuehui He;Lin Nan;Liu C.T.;Huang Han;Xiaolin Huang
通讯作者：
Qiankun Zhang;Jiang Yao;Wei-jun Shen;Huibin Zhang;Yuehui He;Lin Nan;Liu C.T.;Huang Han;Xiaolin Huang
DOI：
10.4028/www.scientific.net/amr.887-888.1156
发表时间：
2014-02
期刊：
Advanced Materials Research
影响因子：
--
作者：
D. Aišman;K. Rubešová;Š. Mikmeková
通讯作者：
D. Aišman;K. Rubešová;Š. Mikmeková