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静态退火对Mg-Gd-Y-Zr挤压合金微结构与织构的影响(英文) 被引量:4

Effect of Static Annealing on Microstructure and Texture in Extruded Mg-Gd-Y-Zr Alloy
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摘要 研究了Mg-9Gd-4Y-0.6Zr挤压合金在静态退火过程中的微结构与织构的演变。采用金相显微镜、扫描电子显微镜、透射电子显微镜、XRD织构测试仪及EBSD分析技术表征了合金的晶粒长大、析出相沉淀及织构改变。结果表明,退火初期的晶粒细化是由再结晶引起的;晶间不均匀变形诱发了晶间的局部析出,继而抑制了再结晶过程。织构分析表明,热挤压产生了常见的基面纤维织构和不常见的柱面纤维织构,即c轴平行于挤压方向;在静态再结晶过程中,新晶粒形核会弱化柱面纤维,而晶粒长大过程会强化柱面纤维。晶界与亚晶界上的大量析出相抑制了织构改变。 The evolution of microstructure and texture for an extruded Mg-9Gd-4Y-0.6Zr alloy during static annealing was investigated. The grain growth, precipitation and texture modification were characterized by optical microscopy, scanning electron microscopy, transmission electron microscopy, XRD texture instrument and EBSD. The results show that the grain refinement at the initial stage of static annealing is caused by recrystallization. The intergranular deformation stimulates local precipitating, which in turn inhibits the recrystallization process. The texture analysis indicates that the hot extrusion produces the conventional basal fiber with {0001} // ED and the unusual prismatic fiber with c axis // ED. During static recrystallization, the grain nucleation weakens the prismatic fiber, while the grain growth strengthens it. A large number of plate phases precipitate at grain boundaries along with subgrain boundaries, which significantly inhibits the texture modification.
出处 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2016年第9期2263-2268,共6页 Rare Metal Materials and Engineering
基金 Hunan Provincial Natural Science Foundation of China(11JJ4033) Scientific Research Fund of Hunan Provincial Education Department(12B030)
关键词 MG-GD-Y-ZR合金 挤压 静态退火 织构 微结构 Mg-Gd-Y-Zr alloy extrusion static annealing texture microstructure
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  • 1Bettles C, Gibson M. JOM[J], 2005, 57(5): 46.
  • 2Pekguleryuz M O. Current Developments in Wrought Magne- sium Alloys[M]. Cambridge: Woodhead Publishing Limited, 2012:3.
  • 3Masoumi M, Zarandi F, Pekguleryuz M O. Scripta Materialia[J], 2010, 62(11): 823.
  • 4Sun D K, Chang C P, Kao P W. Materials Science and Engineering A [J], 2010, 527(26): 7050.
  • 5Cottam R, Robson J, Lorimer Get al. Materials Science and Engineering A[J], 2008, 485(1-2): 375.
  • 6Ion S E, Humpbreys F J, White S H. Acta Metallurgica[J], 1982, 30(10): 1909.
  • 7Robson J D, Twier A M, Lorimer G W et al. Materials Science and Engineering A [J], 2011,528(24): 7247.
  • 8Laser T, Hartig C, Ebeling T et aL Magnesium Technology, Conference[C]. New Orleans LA: TMS, 2008:283.
  • 9Liu H, Xue F, Bai J et al. Rare Metal Materials and Engineering[J], 2014, 43(3): 570.
  • 10Li X, Qi W, Zheng K et al. Journal of Magnesium and Alloys[J], 2013, 1(1): 54.

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