WC Grain Growth Behavior During Selective Laser Melting of WC-Co Cemented Carbides

被引：4

作者：

Liu, Jinyang ^{[1
,6
]}

Chen, Jian ^{[1
,2
]}

Lu, Yang ^{[3
]}

Deng, Xin ^{[3
]}

Wu, Shanghua ^{[3
]}

Lu, Zhongliang ^{[4
,5
]}

机构：

[1] Guangdong Polytech Normal Univ, Sch Electromech Engn, Guangzhou 510635, Peoples R China

[2] Guangdong Master Grp Co Ltd, Yunfu 527400, Peoples R China

[3] Guangdong Univ Technol, Sch Electromech Engn, Guangzhou 510006, Peoples R China

[4] Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China

[5] Guangdong Xian Jiaotong Univ Acad, Foshan 528300, Peoples R China

[6] Guangdong Normal Univ Technol, Guangdong Ind Training Ctr, Guangzhou, Peoples R China

来源：

ACTA METALLURGICA SINICA-ENGLISH LETTERS | 2023年 / 36卷 / 06期

关键词：

Cemented carbides; Selective laser melting; Scanning strategy; Grain; Microstructure; RESIDUAL-STRESS; MICROSTRUCTURE; EVOLUTION; ALLOYS; SHAPE;

D O I：

10.1007/s40195-023-01519-6

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Scanning strategy is a critical parameter for selective laser melting (SLM) processing of metals, alloys as well as metal-ceramic composites, while related research has rarely been reported yet, especially for additive manufacturing of WC-Co cemented carbides. In this study, three scanning strategies, i.e., stripe, checkerboard, and spiral scanning, were used for additive manufacturing of WC-32Co cemented carbides. Checkerboard scanning leads to the highest relative density of 96%. Stripe scanning results in the largest average WC grain size followed by checkerboard and spiral scanning. SLM-processed carbides demonstrate agglomeration of WC grains mixed with isolated Co pools and pores. The WC grain growth mechanisms of SLM-processed cemented carbides include mosaic agglomeration growth and incomplete and uneven step growth regardless of scanning strategies.

引用

页码：949 / 961

页数：13

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