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2195合金鍛造管的淬火與時效工藝
發布人：上海艾荔艾金屬材料有限公司www.jshcn.cn
更新時間：2015-10-13
研究了2195合金大規格鍛造管的淬火與時效工藝。通過拉伸試驗、金相顯微儀和透射電鏡考察了熱處理工藝參數對其力學性能和顯微組織的影響。
2195合金鍛造管的淬火與時效工藝Quenching and aging technologies for alloy 2195 forged tube
研究了2195合金大規格鍛造管的淬火與時效工藝。通過拉伸試驗、金相顯微儀和透射電鏡考察了熱處理工藝參數對其力學性能和顯微組織的影響。淬火敏感性試驗表明，產品必須采用水冷方式淬火，但對冷卻水的溫度可以不作嚴格控制。不同溫度的人工時效工藝試驗表明，低溫峰值時效可以使產品獲得較高的強度和理想的伸長率，而時效溫度升高將導致沉淀相粗化，使產品的強度下降。合理的2195合金鍛造管的淬火工藝為500 ℃固溶、水冷淬火，人工時效制度為150 ℃時效195 h。
Heat treatment technologies for a large-sized, forged tube of alloy 2195 were studied. The effects of heat treatment parameters on the mechanical properties and microstructure of the product were investigated by means of tensile test, metallography and transmission electron microscopy. The results of quenching-sensitivity test show that, the product must be quenched by water cooling, but no strict limitations are required to the water temperature. The results of tensile test for artificial aging at different temperatures show that the product can achieve high strength and desirable ductility via peak-aging at a relative low temperature. The increase of aging temperature leads to coarsening of precipitates, and hence decreases the strength of the product. The suitable heat treatment technologies for the alloy 2195 forged tube should be that, solution-treated at 500 ℃, water quenching and then artificial aging at 150 ℃ for 195 h.
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