SIA OpenIR  > 工艺装备与智能机器人研究室
Formation and impact of functionally graded buffer layers between martensitic stainless steel and wrought steel substrate by laser metal deposition
Wang ZG(王志国)1,2; Zhao JB(赵吉宾)1,2; Zhao YH(赵宇辉)1,2,5; Zhang ZH(张志昊)3; Zhang, Hongyu4; He ZF(何振丰)1,2
Department工艺装备与智能机器人研究室
Source PublicationMaterials and Design
ISSN0264-1275
2021
Volume201Pages:1-12
Indexed ByEI
EI Accession number20210409828853
Contribution Rank1
Funding OrganizationNational Key Research and Development Program (No. 2018YFB1105802) ; National Natural Science Foundation of China (No. 51805526)
KeywordLaser metal deposition Metals and alloys Microstructure Functionally graded structure Mechanical properties Buffer layer
Abstract

In this study, the martensitic stainless-steel powder had been successfully deposited on the surfaces of 1045 wrought steel substrates using five types of laser metal deposition strategies. The results showed that a thin buffer layer can be naturally generated in-between the deposition layer and substrate owning to the dilution effect, producing functionally graded structures consisted of martensite dendrite matrices and intermetallic phases (e.g., M23(C, B)6). Unfortunately, the poor deformation characteristic of natural buffer layers can exacerbate the risk of cracking, leading to an incompatibility between martensitic stainless steel and forming steel. A thick artificial buffer layer was then designed by addition of Inconel 625 powder. Because of the formation of graded austenite phase in the artificial buffer layer, the yield strength of specimen was enhanced significantly. Hence, our study can be used for manufacture of reliable moulds with high surface hardness and structural strength and may be helpful in further developing hybrid forming strategy in the field of mould manufacture. When subjected to stress impact during mould filling, the artificial buffer layer with functionally graded properties would have a perfect capability to bear the deformation as the load increased, dramatically improving the reliability and functionality of moulds.

Language英语
Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/28311
Collection工艺装备与智能机器人研究室
Corresponding AuthorZhao JB(赵吉宾); Zhao YH(赵宇辉); Zhang ZH(张志昊)
Affiliation1.Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
2.Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, China
3.Fujian Key Laboratory of Advanced Materials, Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, China
4.Superalloys Division, Institute of Metal Research, Chinese Academy of Sciences, Shenyang; 110016, China
5.University of Chinese Academy of Sciences, Beijing 100049, China
Recommended Citation
GB/T 7714
Wang ZG,Zhao JB,Zhao YH,et al. Formation and impact of functionally graded buffer layers between martensitic stainless steel and wrought steel substrate by laser metal deposition[J]. Materials and Design,2021,201:1-12.
APA Wang ZG,Zhao JB,Zhao YH,Zhang ZH,Zhang, Hongyu,&He ZF.(2021).Formation and impact of functionally graded buffer layers between martensitic stainless steel and wrought steel substrate by laser metal deposition.Materials and Design,201,1-12.
MLA Wang ZG,et al."Formation and impact of functionally graded buffer layers between martensitic stainless steel and wrought steel substrate by laser metal deposition".Materials and Design 201(2021):1-12.
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