@inproceedings{91f8565bc0f24fc4b42986ac57a423f6,
title = "Direct observations of sigma phase growth and dissolution in 2205 duplex stainless steel",
abstract = "The formation and growth of sigma (σ) phase in a 2205 duplex stainless steel is monitored during an 850°C isothermal heat treatment using an in situ synchrotron x-ray diffraction technique. At this temperature, σ phase is first observed within approximately 40 seconds of the start of the isothermal heat treatment and grows rapidly over the course of the 3600 second heat treatment to a volume fraction of approximately 13%. A simultaneous increase in the austenite (γ) volume fraction and a decrease in the ferrite (δ) volume fraction are observed. The σ phase formed at this temperature is rapidly dissolved within approximately 200 seconds when the temperature is increased to 1000°C. Accompanying this rapid dissolution of the σ phase, the δ and γ volume fractions both approach the balanced (50/50) level observed in the as-received material.",
author = "Palmer, {T. A.} and Elmer, {J. W.} and Babu, {S. S.} and Specht, {E. D.}",
year = "2005",
language = "English (US)",
isbn = "0871708426",
series = "ASM Proceedings of the International Conference: Trends in Welding Research",
pages = "945--950",
booktitle = "Trends in Welding Research - Proceedings of the 7th International Conference",
note = "7th International Conference on Trends in Welding Research ; Conference date: 16-05-2005 Through 20-05-2005",
}