Determination of the spectral emissivity coefficient of furnace and air-oxide scale of Ti–6Al–4V titanium alloy

IF 0.8 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING

Metallurgist Pub Date : 2025-06-24 DOI:10.1007/s11015-025-01919-2

A. Yu. Postylyakov, V. A. Gol’tsev, A. A. Koksharov, D. L. Shvarts

{"title":"Determination of the spectral emissivity coefficient of furnace and air-oxide scale of Ti–6Al–4V titanium alloy","authors":"A. Yu. Postylyakov, V. A. Gol’tsev, A. A. Koksharov, D. L. Shvarts","doi":"10.1007/s11015-025-01919-2","DOIUrl":null,"url":null,"abstract":"<div><p>We present the results of experimental determination of the emissivity coefficient ε of furnace and air scale for Ti–6Al–4V alloy (an analog of the Russian VT6 alloy), which is one of the most extensively used titanium alloys. According to GOST R ISO 18434-1-2013, the procedure of measurements is based on the simultaneous recording of temperature in the course of cooling of a cylindrical sample by using contact and noncontact methods with subsequent determination of ε from the equality of both values. On the basis of the obtained data, we formed samples and computed the average values of <ε> equal to 0.876 and 0.572 for the furnace and air scales, respectively. A significant dependence of the emissivity coefficient on the temperature of the sample was not detected. The process of cooling of the sample from the initial heating temperature was simulated by the finite-element method. It is shown that the numerical and experimental data exhibit both qualitative and a quantitative agreement at five reference surface points (the relative error is not greater than 2%). The obtained results can be used to monitor the values of temperature in the course of heating and deformation treatment of the Ti–6Al–4V alloy in the industry.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"69 1","pages":"90 - 99"},"PeriodicalIF":0.8000,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metallurgist","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11015-025-01919-2","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}

引用次数: 0

Abstract

We present the results of experimental determination of the emissivity coefficient ε of furnace and air scale for Ti–6Al–4V alloy (an analog of the Russian VT6 alloy), which is one of the most extensively used titanium alloys. According to GOST R ISO 18434-1-2013, the procedure of measurements is based on the simultaneous recording of temperature in the course of cooling of a cylindrical sample by using contact and noncontact methods with subsequent determination of ε from the equality of both values. On the basis of the obtained data, we formed samples and computed the average values of <ε> equal to 0.876 and 0.572 for the furnace and air scales, respectively. A significant dependence of the emissivity coefficient on the temperature of the sample was not detected. The process of cooling of the sample from the initial heating temperature was simulated by the finite-element method. It is shown that the numerical and experimental data exhibit both qualitative and a quantitative agreement at five reference surface points (the relative error is not greater than 2%). The obtained results can be used to monitor the values of temperature in the course of heating and deformation treatment of the Ti–6Al–4V alloy in the industry.

查看原文本刊更多论文

Ti-6Al-4V钛合金炉内光谱发射系数及空气氧化垢的测定

本文介绍了应用最广泛的钛合金之一Ti-6Al-4V合金（俄罗斯VT6合金的类似物）炉内和气阻发射率系数ε的实验测定结果。根据GOST R ISO 18434-1-2013，测量过程是基于在圆柱形样品冷却过程中同时记录温度，采用接触和非接触方法，随后根据两个值的相等性确定ε。根据获得的数据，我们形成样本，计算出炉膛和空气标尺的<；ε>；平均值分别为0.876和0.572。没有检测到发射系数对样品温度的显著依赖性。采用有限元方法模拟了试样从初始加热温度开始冷却的过程。结果表明，数值与实验数据在5个参考面点上均表现出定性和定量的一致性（相对误差不大于2%）。所得结果可用于工业上对Ti-6Al-4V合金在加热和变形处理过程中的温量值进行监测。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Metallurgist 工程技术-冶金工程

CiteScore

1.50

自引率

44.40%

发文量

151

审稿时长

4-8 weeks

期刊介绍： Metallurgist is the leading Russian journal in metallurgy. Publication started in 1956. Basic topics covered include: State of the art and development of enterprises in ferrous and nonferrous metallurgy and mining; Metallurgy of ferrous, nonferrous, rare, and precious metals; Metallurgical equipment; Automation and control; Protection of labor; Protection of the environment; Resources and energy saving; Quality and certification; History of metallurgy; Inventions (patents).