对奥氏体不锈钢焊缝进行数字射线照相时斑点迹象的评估

IF 0.5 4区材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Materials Evaluation Pub Date : 2022-01-01 DOI:10.32548/10.32548/2022.me-800122_2

Albert Wenzig

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引用次数: 0

摘要

当对具有明显堆焊尺寸的奥氏体不锈钢焊缝进行射线照相时，选择低的射线照相千伏（keV）有助于产生并非缺陷的射线照相指示。造成这种斑点状状况的因素既有射线照相，也有冶金。来自低keV的电子在穿透焊缝的树枝状晶粒结构时可以衍射或吸收。keV的增加，或者使用伽马射线等效同位素，会在材料中产生电子输出和穿透的显著变化。

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Assessing Mottled Indications when Digitally Radiographing Austenitic Stainless Steel Welds

When radiographing an austenitic stainless steel weld with an appreciable weld deposit size, selecting a low radiographic kilovoltage (keV) can contribute to producing a radiographic indication that is not an imperfection. The contributors to this mottled condition are both radiographical and metallurgical. Electrons from low keV can diffract or absorb when penetrating through the dendritic grain structure of a weld. The increase in keV, or using gamma ray–equivalent isotopes, produces a marked change in electron output and penetration in material.

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来源期刊

Materials Evaluation 工程技术-材料科学：表征与测试

CiteScore

0.90

自引率

16.70%

发文量

审稿时长

6-12 weeks

期刊介绍： Materials Evaluation publishes articles, news and features intended to increase the NDT practitioner’s knowledge of the science and technology involved in the field, bringing informative articles to the NDT public while highlighting the ongoing efforts of ASNT to fulfill its mission. M.E. is a peer-reviewed journal, relying on technicians and researchers to help grow and educate its members by providing relevant, cutting-edge and exclusive content containing technical details and discussions. The only periodical of its kind, M.E. is circulated to members and nonmember paid subscribers. The magazine is truly international in scope, with readers in over 90 nations. The journal’s history and archive reaches back to the earliest formative days of the Society.