The distribution of microconcentrations of Ti in NbTi ingots, produced by various melting methods, are under the consideration. The surface gas saturations are investigated at recrystallization and homogenization heat treatments. The control measures, allowed to reveal billet defects in a process, are described. The 40 µm filament conductor, produced of NbTi billets, manufactured by VNIINM, has jc=3.2 × 105A/cm2and n = 87(5T;0.1 µV/cm).

NbTi billets for superconductor production

Teledyne Wah Chang (TWC) has been a supplier of Nb based superconductors since 1960. An original producer of Nb50Zr, TWC switched to the production of Nb47Ti because of its superior ductility and the demand from customers. The material specified for all superconducting accelerator magnet projects since Fermilab’s Energy Doubler project and the Isabelle project at Brookhaven National Laboratory (BNL) has been High Homogeneity Nb 47wt.% Ti (HiHo NbTi). HiHo NbTi was developed at TWC as a response to customer demand after difficulties experienced in the development of wire for Fermilab and Isabelle. The presence of freckles in the alloy interfered with uniform alpha titanium precipitation and resulted in highly variable, low critical current density product1. Other methods of consolidation were attempted with good results but these had other problems such as niobium inclusions and chemical variation along the ingot length2. The process of consolidating niobium and Titanium to produce homogeneous Nb47Ti was refined at TWC in the early 1980’s to produce product with minimal freckling and consistent properties. Our HiHo NbTi has normal compositional variation from the dendritic structure formed as the material is cast and little or no evidence of the high titanium regions, commonly called freckles. The titanium has normal compositional fluctuations on the order of 1 weight percent. Freckles are small regions in which titanium content is 5 to 10 weight percent higher than the surrounding matrix. Freckles can be easily seen in radiographs of billet slices or seen in rod samples after proper polishing and etching. Verification of the HiHo grade is made by radiographic examination and comparison to standards of acceptability, but it is guaranteed by control of the process3.

Production and Quality Control of High Homogeneity Niobium 47 Weight Percent Titanium for Accelerator Applications

. The ESA/KU Leuven CubeSpec mission is speciﬁcally designed to provide low-cost space-based high-resolution optical spectroscopy. Here we highlight the science requirements and capabilities of CubeSpec. The primary science goal is to perform pulsation mode identiﬁcation from spectroscopic line proﬁle variability and empower asteroseismology of massive stars.

The CubeSpec space mission: Asteroseismology of massive stars from time-series optical spectroscopy

Handle everyday research tasks with reliable, citation-backed results

Your personal Research Agent to handle research tasks with citation-backed results

Popular Tasks used by Researchers

How can I help with your research?

Meet SciSpace

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

Brian VanDoren

Author Tools

Chat about Author

Papers

Production and Quality Control of High Homogeneity Niobium 47 Weight Percent Titanium for Accelerator Applications

The CubeSpec space mission: Asteroseismology of massive stars from time-series optical spectroscopy