{"title":"加硼对超级奥氏体不锈钢 S32654 沉淀行为的影响机理","authors":"Jiangtao Yu, Shucai Zhang, Huabing Li, Zhouhua Jiang, Hao Feng, Hongchun Zhu, Teng Ban, Tingyu Ren","doi":"10.1007/s12540-024-01772-z","DOIUrl":null,"url":null,"abstract":"<div><p>The influence mechanism of Boron (B) addition on the precipitation behavior of S32654 was systematically investigated in this work. The results indicated that B significantly inhibited the nucleation and growth of σ phase through its non-equilibrium grain boundary segregation (NGS) at 1000 °C. The segregation of B at grain boundary (GB) decreased GB energy and suppressed Cr and Mo segregation, thus reducing the nucleation sites of intergranular σ phase. B also segregated at vacancies and dislocations during its reverse diffusion process, reducing the nucleation sites of intragranular σ. Meanwhile, B markedly decreased the nucleation rate of σ phases. In addition, B inhibited the growth of σ phase through segregation at σ/γ interface. Under the combined inhibitory effects of B, the precipitation of σ phase was markedly suppressed. By comparation, the addition of B has little effect on the precipitation of Cr<sub>2</sub>N. B decreased the nucleation position but accelerated the nucleation rate. Under the joint action of these two opposing factors, the nucleation ability of Cr<sub>2</sub>N has not significantly changed. Additionally, the segregation tendency of B at Cr<sub>2</sub>N/γ interfaces was weak, leading to a little inhibition effect on the Cr<sub>2</sub>N growth. Therefore, the precipitation tendency of Cr<sub>2</sub>N in B-bearing and B-free steels was basically the same.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"31 3","pages":"728 - 741"},"PeriodicalIF":3.3000,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence Mechanism of Boron Addition on the Precipitation Behavior of Super Austenitic Stainless Steel S32654\",\"authors\":\"Jiangtao Yu, Shucai Zhang, Huabing Li, Zhouhua Jiang, Hao Feng, Hongchun Zhu, Teng Ban, Tingyu Ren\",\"doi\":\"10.1007/s12540-024-01772-z\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The influence mechanism of Boron (B) addition on the precipitation behavior of S32654 was systematically investigated in this work. The results indicated that B significantly inhibited the nucleation and growth of σ phase through its non-equilibrium grain boundary segregation (NGS) at 1000 °C. The segregation of B at grain boundary (GB) decreased GB energy and suppressed Cr and Mo segregation, thus reducing the nucleation sites of intergranular σ phase. B also segregated at vacancies and dislocations during its reverse diffusion process, reducing the nucleation sites of intragranular σ. Meanwhile, B markedly decreased the nucleation rate of σ phases. In addition, B inhibited the growth of σ phase through segregation at σ/γ interface. Under the combined inhibitory effects of B, the precipitation of σ phase was markedly suppressed. By comparation, the addition of B has little effect on the precipitation of Cr<sub>2</sub>N. B decreased the nucleation position but accelerated the nucleation rate. Under the joint action of these two opposing factors, the nucleation ability of Cr<sub>2</sub>N has not significantly changed. Additionally, the segregation tendency of B at Cr<sub>2</sub>N/γ interfaces was weak, leading to a little inhibition effect on the Cr<sub>2</sub>N growth. Therefore, the precipitation tendency of Cr<sub>2</sub>N in B-bearing and B-free steels was basically the same.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":703,\"journal\":{\"name\":\"Metals and Materials International\",\"volume\":\"31 3\",\"pages\":\"728 - 741\"},\"PeriodicalIF\":3.3000,\"publicationDate\":\"2024-08-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Metals and Materials International\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12540-024-01772-z\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metals and Materials International","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12540-024-01772-z","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Influence Mechanism of Boron Addition on the Precipitation Behavior of Super Austenitic Stainless Steel S32654
The influence mechanism of Boron (B) addition on the precipitation behavior of S32654 was systematically investigated in this work. The results indicated that B significantly inhibited the nucleation and growth of σ phase through its non-equilibrium grain boundary segregation (NGS) at 1000 °C. The segregation of B at grain boundary (GB) decreased GB energy and suppressed Cr and Mo segregation, thus reducing the nucleation sites of intergranular σ phase. B also segregated at vacancies and dislocations during its reverse diffusion process, reducing the nucleation sites of intragranular σ. Meanwhile, B markedly decreased the nucleation rate of σ phases. In addition, B inhibited the growth of σ phase through segregation at σ/γ interface. Under the combined inhibitory effects of B, the precipitation of σ phase was markedly suppressed. By comparation, the addition of B has little effect on the precipitation of Cr2N. B decreased the nucleation position but accelerated the nucleation rate. Under the joint action of these two opposing factors, the nucleation ability of Cr2N has not significantly changed. Additionally, the segregation tendency of B at Cr2N/γ interfaces was weak, leading to a little inhibition effect on the Cr2N growth. Therefore, the precipitation tendency of Cr2N in B-bearing and B-free steels was basically the same.
期刊介绍：
Metals and Materials International publishes original papers and occasional critical reviews on all aspects of research and technology in materials engineering: physical metallurgy, materials science, and processing of metals and other materials. Emphasis is placed on those aspects of the science of materials that are concerned with the relationships among the processing, structure and properties (mechanical, chemical, electrical, electrochemical, magnetic and optical) of materials. Aspects of processing include the melting, casting, and fabrication with the thermodynamics, kinetics and modeling.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
