基于钴基合金覆层的多层金属热锻模原型制备与性能

中国机械工程 ›› 2015, Vol. 26 ›› Issue (6): 828-830,836.

基于钴基合金覆层的多层金属热锻模原型制备与性能

王华君1;李相超1;赵堃2;谢冰1

1.武汉理工大学,武汉,430070
2.武汉铁路局,武汉,430000

出版日期:2015-03-25 发布日期:2015-03-24
基金资助:
国家自然科学基金资助项目（51475346）；湖北省自然科学基金资助项目(2012FFB05108)

Manufacture and Properties on Prototype for Multi-metal Hot Forging Die Based on Cobalt Alloy Coating

Wang Huajun1;Li Xiangchao1;Zhao Kun2;Xie Bing1

1.Wuhan University of Technology,Wuhan,430070
2.Wuhan Railway Bureau,Wuhan,430000

Online:2015-03-25 Published:2015-03-24
Supported by:
National Natural Science Foundation of China（No. 51475346）;Hubei Provincial Natural Science Foundation of China（No. 2012FFB05108）

摘要/Abstract

摘要：

基于功能梯度材料(FGM)的思想制备多层金属热锻模是提高模具寿命的有效方法。采用焊条电弧堆焊制备了多层金属热锻模的原型试样，试样经焊后热处理后，进行了金相组织分析、显微硬度测试、磨损实验和冲击韧性测试等实验。实验结果表明:钴基合金堆焊层与W6Mo5Cr4V2堆焊层界面冶金结合情况良好；截面显微硬度呈梯度分布，表面钴基合金硬度达到492HV;制备的多层金属试样耐磨性是H13钢耐磨性的2.5倍，冲击韧性处于合理范围。

关键词: 功能梯度材料, 热锻模, 钴基合金, 堆焊, 梯度分布

Abstract:

Multilayer metal hot forging die is an effective method to improve the service life of the die based on the idea of FGM. The samples of multi metal hot forging die were prepared through shielded metal arc welding herein. After post weld heat treatment, the microstructure analysis, microhardness test, wear test and impact toughness test were done. The test results show that, interface of cobalt alloy surfacing layer and W6Mo5Cr4V2 surfacing layer bonds in good condition. The microhardness of cross section is in gradient distribution and the surface hardness of cobalt alloy reaches 492HV. Wear resistance is 2.5 times that of H13 and the impact toughness is in a rational range.

Key words: functionally gradient material(FGM), hot forging die, cobalt alloy, surfacing welding, gradient distribution

中图分类号:

TG70

王华君, 李相超, 赵堃, 谢冰. 基于钴基合金覆层的多层金属热锻模原型制备与性能[J]. 中国机械工程, 2015, 26(6): 828-830,836.

Wang Huajun, Li Xiangchao, Zhao Kun, Xie Bing. Manufacture and Properties on Prototype for Multi-metal Hot Forging Die Based on Cobalt Alloy Coating[J]. China Mechanical Engineering, 2015, 26(6): 828-830,836.

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