A model to evaluate the ductile-to-brittle transition of bcc-W based on small tensile test and dislocation characterization

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2025-01-15 DOI:10.1016/j.jallcom.2025.178483

Xingzhan Yuan , Shi Hong , Jing Wang , Bing Ma , Yifan Zhang , Man Niu , Laima Luo , Yucheng Wu

{"title":"A model to evaluate the ductile-to-brittle transition of bcc-W based on small tensile test and dislocation characterization","authors":"Xingzhan Yuan , Shi Hong , Jing Wang , Bing Ma , Yifan Zhang , Man Niu , Laima Luo , Yucheng Wu","doi":"10.1016/j.jallcom.2025.178483","DOIUrl":null,"url":null,"abstract":"<div><div>In this study, we propose a model to evaluate the ductile-to-brittle transition (DBT) of W based alloy using small tensile test and dislocation density measurement. The new model is built upon the high correlation between the DBT and the dislocation multiplication. Compared the measured results from the typical testing methods such as small tensile test, three-point bending test, it reveals that the new model is close to the bending test results. Interestingly, the equivalent transition temperature (ETT) of W-Y<sub>2</sub>O<sub>3</sub> alloy measured by three-point bending test and the new model is lower than that of pure W. The effect of grain boundary and Y<sub>2</sub>O<sub>3</sub> particles on DBT were discussed, and the lower transition temperature of W-Y<sub>2</sub>O<sub>3</sub> alloy is attributed to the easier dislocation multiplication near grain boundary as well as the increase of small angle grain boundary.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1011 ","pages":"Article 178483"},"PeriodicalIF":6.3000,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Alloys and Compounds","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0925838825000416","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

In this study, we propose a model to evaluate the ductile-to-brittle transition (DBT) of W based alloy using small tensile test and dislocation density measurement. The new model is built upon the high correlation between the DBT and the dislocation multiplication. Compared the measured results from the typical testing methods such as small tensile test, three-point bending test, it reveals that the new model is close to the bending test results. Interestingly, the equivalent transition temperature (ETT) of W-Y₂O₃ alloy measured by three-point bending test and the new model is lower than that of pure W. The effect of grain boundary and Y₂O₃ particles on DBT were discussed, and the lower transition temperature of W-Y₂O₃ alloy is attributed to the easier dislocation multiplication near grain boundary as well as the increase of small angle grain boundary.

查看原文本刊更多论文

基于小拉伸试验和位错表征的bcc-W韧脆转变模型

在这项研究中，我们提出了一个模型来评估W基合金的韧性到脆性转变（DBT）使用小拉伸试验和位错密度测量。新模型建立在DBT与位错乘法高度相关的基础上。将小拉伸试验、三点弯曲试验等典型试验方法的实测结果进行比较，表明新模型与弯曲试验结果较为接近。研究了晶界和Y2O3颗粒对DBT的影响，认为W-Y2O3合金较低的转变温度是由于晶界附近的位错更容易增殖以及小角度晶界的增加。

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

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.

文献相关原料

公司名称

产品信息

阿拉丁

yttrium nitrate