Effect of sub-zero treatments on hardness and corrosion properties of low-alloy nickel steel

IF 1.4 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY AIMS Materials Science Pub Date : 2023-01-01 DOI:10.3934/matersci.2023004

Vinda Puspasari, Satrio Herbirowo, A. M. Habieb, Dedi Pria Utama, R. Roberto, B. Adjiantoro

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引用次数: 2

Abstract

Low alloy nickel steel was chosen for this experiment because it is suitable for grinding balls application due to its high hardness and corrosion resistance. This study aimed to see the effect of different sub-zero treatments on the hardness, fractography and corrosion properties of low alloy nickel steel. The prepared specimens were heated to the austenitizing temperature of 980 ℃ in a furnace for one hour and water-quenched until they reached room temperature. Furthermore, the quenched specimens were chilled in liquid nitrogen for a variated time of 10, 60 or 360 min, followed by tempering treatment at 200 ℃ for one hour. According to the hardness test, the sub-zero treatment is effective in hardening materials, where the hardness value increases as the sub-zero treatment time increases, ranging from 204.93 to 417.98 HV. The fractography test indicated ductile fracture characterized by dimples at the fractured surface. Moreover, the corrosion test showed an enhancement of corrosion resistance with increased sub-zero treatment time.

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低温处理对低合金镍钢硬度和腐蚀性能的影响

本实验选用低合金镍钢，其硬度高，耐腐蚀，适合于磨球应用。本研究旨在观察不同的低温处理对低合金镍钢硬度、断口形貌和腐蚀性能的影响。将制备好的试样在炉内加热至980℃奥氏体化温度1小时后，水淬至室温。将淬火后的试样在液氮中冷冻10、60或360分钟，然后在200℃下回火1小时。硬度测试表明，低温处理对材料的硬化是有效的，硬度值随着低温处理时间的增加而增大，范围为204.93 ~ 417.98 HV。断口形貌试验表明，断口表面呈韧窝的韧性断裂。此外，腐蚀试验表明，随着亚零度处理时间的延长，耐蚀性增强。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

AIMS Materials Science MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

3.60

自引率

0.00%

发文量

审稿时长

4 weeks

期刊介绍： AIMS Materials Science welcomes, but not limited to, the papers from the following topics: · Biological materials · Ceramics · Composite materials · Magnetic materials · Medical implant materials · New properties of materials · Nanoscience and nanotechnology · Polymers · Thin films.