回火时间和温度对13Cr3Mo3Ni不锈钢硬度、组织和腐蚀速率的影响

IF 0.6 Q4 METALLURGY & METALLURGICAL ENGINEERING

Metalurgija Pub Date : 2017-04-28 DOI:10.14203/METALURGI.V32I1.222

Hadi Perdana, M. S. Anwar, Andinnie Juniarsih, Efendi Mabruri

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引用次数: 1

摘要

13Cr3Mo3Ni马氏体不锈钢是汽轮机叶片用410型改进型钢。研究了回火温度和回火时间对改性钢的硬度、显微组织和腐蚀速率的影响。采用金相显微镜和扫描电子能谱仪对其进行显微组织观察，采用洛氏C硬度计对其进行硬度测试，采用Gamry G750仪对其进行3.5% NaCl溶液腐蚀测试。一般来说，钢的硬度随回火温度的升高而降低。而在500 ~ 650℃回火时，合金硬度升高，表现为二次硬化，显微组织中出现亚微米级的金属碳化物。回火时间延长6 h，硬度下降，但未发生二次硬化。回火温度改变了13Cr3Mo3Ni钢的腐蚀电位、腐蚀电流和腐蚀速率。[摘要]巴哈塔罕克拉13Cr3Mo3Ni merupakan改性巴哈塔罕克拉马氏体410 untuk digunakan sebagai材料sudu pada turbup。tuisan ini memaparkan pengaruh suhu dan waktu回火terhahadap kekerasan，构造mikro dan laju korosi baja tahan karat马氏体13Cr3Mo3Ni。企鹅yang dilakukan adalah pengamatan struktur mikroskop optik dan SEM-EDS, uji kekerasan dengan Rockwell C danuji korosi di dalam larutan 3,5% NaCl dengan alat Gamry G750。Secara umum kekerasan baja menurun dengan naiknya suhu回火，kecuali padsuhu 500-650°C terjadi peningkatan kekerasan akibat adanya二次硬化dan karbida logam berukuran次mikron teramati sebagai penyebabnya。Peningkatan waktu回火menjadi 6 jam mengakibatkan penurunan kekerasan dan penghilangan efek二次硬化。Perbedaan suhu回火juga menghasilkan Perbedaan potential, arus serta laju korosi baja 13Cr3Mo3Ni。

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Pengaruh Suhu dan Waktu Tempering Terhadap Kekerasan, Struktur Mikro, dan Laju Korosi Baja Tahan Karat Martensitik 13Cr3Mo3Ni [The Influence of Time and Temperature Tempering on Hardness, Microstructure and Corrosion Rate of 13Cr3Mo3Ni Stainless Steel]

The 13Cr3Mo3Ni martensitic stainless steel is the modified 410 type steel for steam turbine blade application. This paper reports the effect of tempering temperature and time on hardness, microstructure and corrosion rate of the modified steel. Microstructure observation was performed using optical microscopy and SEM-EDS, hardness testing using Rockwell C hardness tester and the corrosion test in 3.5% NaCl solution using Gamry G750 instrument. In general, the hardness of the steel decreased with increasing of tempering temperature. However, the hardness increased at the tempering temperature 500-650 °C showing secondary hardening, and the metal carbides with sub-micron in sizes were observed in the microstructure. Longer tempering time of 6 h resulted in decreased hardness without secondary hardening It can be reported also that the tempering temperature changed the potential, current and rate of corrosion of the 13Cr3Mo3Ni steel. Abstrak Baja tahan karat 13Cr3Mo3Ni merupakan modifikasi dari baja tahan karat martensitik 410 untuk digunakan sebagai material sudu pada turbin uap. Tulisan ini memaparkan pengaruh suhu dan waktu tempering terhadap kekerasan, struktur mikro dan laju korosi baja tahan karat martensitik 13Cr3Mo3Ni. Pengujian yang dilakukan adalah pengamatan struktur mikro menggunakan mikroskop optik dan SEM-EDS, uji kekerasan dengan Rockwell C dan uji korosi di dalam larutan 3,5% NaCl dengan alat Gamry G750. Secara umum kekerasan baja menurun dengan naiknya suhu tempering, kecuali pada suhu 500-650 °C terjadi peningkatan kekerasan akibat adanya secondary hardening dan karbida logam berukuran sub-mikron teramati sebagai penyebabnya. Peningkatan waktu tempering menjadi 6 jam mengakibatkan penurunan kekerasan dan penghilangan efek secondary hardening . Perbedaan suhu tempering juga menghasilkan perbedaan potensial, arus serta laju korosi baja 13Cr3Mo3Ni.

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来源期刊

Metalurgija 工程技术-冶金工程

CiteScore

1.20

自引率

33.30%

发文量

审稿时长

4-8 weeks

期刊介绍： The journal Metalurgija is primary scientific periodical that publishes scientific papers (original papers, preliminary notes, reviewed papers) as well as professional papers from the area of basic, applicable and developing researching in metallurgy and boundary metallurgy areas (physics, chemistry, mechanical engineering). These papers relate to processing ferrous and non-ferrous metallurgy, treating investigating as well as testing of raw materials, semi products and products, especially in the area of improving new materials and possibilities of their implementation. The journal is the only national periodical of this kind in the Republic of Croatia and covers the scientific field of metallurgy, especially: physical metallurgy and materials; process metailurgy, (ferrous and non-ferrous); mechanical metallurgy (processing, power , etc.); related (adjoing) branches: mechanlcal engineering, chemistry, physics etc.