Real time monitoring of phase transformation and strain evolution in LTT weld filler material using EDXRD

Real time monitoring of phase transformation and strain evolution in LTT weld filler material using EDXRD
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使用 EDXRD 实时监测 LTT 焊接填充材料的相变和应变演变

DOI:
10.1016/j.jmatprotec.2014.06.008
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发表时间:
2014
影响因子:
6.3
通讯作者:
Th. Buslaps
Th. Buslaps
中科院分区:
材料科学1区
文献类型:
--
作者:
J. Gibmeier;E. Held;J. Altenkirch;A. Kromm;Th. Kannengiesser;Th. Buslaps

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针对新开发的 10% Cr 和 10% Ni 低转变温度 (LTT) 焊接填充材料,研究了实际焊接条件下钨极气体保护焊 (GTAW) 过程中的局部相变动力学和应变演化。提出了实验设置以及测量和评估策略,以实时了解焊接过程。实验是在光束线 ID15@ESRF 上使用两个探测器 EDXRD(能量色散 X 射线衍射)装置和高能同步加速器 X 射线进行的。焊接过程中的时间分辨衍射分析是在焊缝的纵向和横向上局部进行的,以检查应变状态和转变动力学的相互依赖性。这种理解对于焊接工艺的优化至关重要,因此对于调整最终的残余应力状态至关重要,这是 LTT 合金应用的主要问题之一。使用本文提出的方法,可以在实际焊接过程中以 5 Hz 的计数率监测 EDXRD 衍射图案。借助时间分辨衍射数据,确定了局部转变温度和时间,并就转变速率和延时相变讨论了局部相特异性应变演化。
For a newly developed 10% Cr and 10% Ni low transformation temperature (LTT) weld filler material, the local phase transformation kinetics and the strain evolution during gas tungsten arc welding (GTAW) under real welding conditions was studied. An experimental set-up and a measuring and evaluation strategy are presented to gain a real time insight into the welding process. The experiments were carried out at the beam line ID15@ESRF using a two detector EDXRD (energy dispersive X-ray diffraction) set-up and high energy synchrotron X-rays. The time-resolved diffraction analysis during welding was carried out locally throughout the weld in longitudinal as well as in transverse direction to the weld line to examine the interdependence of the strain state and the transformation kinetics. This comprehension is crucial for the optimization of the weld process, and thus for the tailoring of the resulting residual stress states, which is one of the main issues for the application of LTT alloys. Using the herein proposed approach EDXRD diffraction pattern can be monitored during real welding with a counting rate of 5 Hz. By means of the time resolved diffraction data the local transformation temperatures and times were determined and the local phasespecific strain evolutions are discussed with respect to the transformation rates and the time-delayed phase transformations.
DOI: 10.4028/www.scientific.net/msf.768-769.620
发表时间: 2013-09
期刊: Materials Science Forum
影响因子: --
作者:
J. Gibmeier;E. Obelode;J. Altenkirch;A. Kromm;T. Kannengiesser
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DOI: 10.1177/0309324711413190
发表时间: 2011
期刊: The Journal of Strain Analysis for Engineering Design
影响因子: --
作者:
J. Altenkirch;J. Gibmeier;V. Kostov;A. Kromm;T. Kannengiesser;S. Doyle;A. Wanner
通讯作者: A. Wanner
用于实时观察钨极气体保护电弧 (GTA) 焊接过程的 EDXRD 设置
DOI: 10.4028/www.scientific.net/msf.706-709.1655
发表时间: 2012
期刊: Materials Science Forum
影响因子: --
作者:
J. Altenkirch;J. Gibmeier;T. Buslaps;V. Honkimäki
通讯作者: V. Honkimäki
DOI: 10.1154/1.2951824
发表时间: 2008
期刊: Powder Diffraction
影响因子: 0.5
作者:
T. Kannengiesser;A. Kromm;M. Rethmeier;J. Gibmeier
通讯作者: J. Gibmeier
%20自发%20马氏体%20转变%20in%2018%%20Cr、%208%%20Ni%20钢
DOI: --
发表时间: 1962
期刊:
影响因子: --
作者:
R.P Reed
通讯作者: R.P Reed