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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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均匀化处理对GH742合金热变形行为的影响
DOI: 10.3724/SP.J.1037.2012.00250, PP. 1403-1408
Keywords: 镍基高温合金,均匀化,热塑性,流动应力,动态再结晶
Abstract:
采用Gleeble-3500热模拟试验机研究了未均匀化、部分均匀化和完全均匀化处理的高合金化GH742合金铸锭的等温热变形行为.结果表明,随着均匀化程度的提高,合金热变形过程中的流动应力逐渐降低,塑性提高,动态再结晶程度增加;元素偏析和γ'相和δ相等析出相导致变形过程中形成大量的位错和形变带,提高了合金的变形抗力;大块Laves相和Ni5Ce相等脆性相破碎后容易形成微裂纹;大块、密集分布的一次析出MC型碳化物在变形过程中容易产生条带组织,并形成应力集中区,导致裂纹萌生.采用低温预处理和高温扩散相结合的均匀化制度,能够消除元素偏析和有害脆性相,改善碳化物尺寸和分布,降低热变形抗力,明显提高合金的热塑性,获得均匀的再结晶组织.
| [1] | Yuan Y, Gu Y F, Osada T, Zhong Z H, Yokokawa T, Harada H. Scr Mater, 2012; 67: 137
|
| [2] | Xie G, Wang L, Zhang J, Lou L H. Scr Mater, 2012; 66: 378
|
| [3] | Ning Y Q, Yao Z K, Fu M W, Guo H Z. Mater Sci Eng, 2011; A528: 8065
|
| [4] | Wu K, Liu G Q, Hu B F, Li F, Zhang YW, Tao Y, Liu J T. Mater Charact, 2010; 61: 330
|
| [5] | Li D F, Guo Q M, Guo S L, Peng H J, Wu Z G. Mater Des, 2011; 32: 696
|
| [6] | Zhong Z Y, Zhuang J Y. J Iron Steel Res, 2003; 15: 1
|
| [7] | (仲增墉, 庄景云. 钢铁研究学报, 2003; 15: 1)
|
| [8] | Qu J L, Bi Z N, Du J H, Wang M Q, Wang Q Z, Zhang J. J Iron Steel Res, 2011; 18: 59
|
| [9] | Zhang B J, Zhao G P, Xu G H, Feng D. Acta Metall Sin, 2005; 41: 1207
|
| [10] | (张北江, 赵光普, 胥国华, 冯涤. 金属学报, 2005; 41: 1207)
|
| [11] | Lu X D, Du J H, Deng Q, Zhong Z Y. J Alloys Compd, 2009; 486: 195
|
| [12] | Long Z D, Zhuang J Y, Deng B, Zhong Z Y. Acta Metall Sin, 1999; 35: 1211
|
| [13] | (龙正东, 庄景云, 邓波, 仲增墉. 金属学报, 1999; 35: 1211)
|
| [14] | Zheng L, Gu C Q, Zheng Y R. Scr Mater, 2004; 50: 435
|
| [15] | Gizan X R, Liu E Z, Zheng Z, Yu Y S, Tong J, Zhai Y C. J Mater Sci Technol, 2011; 27: 113
|
| [16] | Wang K, Si H, Yang C, Xu T D. J Iron Steel Res Int, 2011; 18: 61
|
| [17] | Dupont J N, Robino C V, Michael J R, Notis M R, Marder A R. Metall Mater Trans, 1998; 29A: 2785
|
| [18] | Pan X L, Yu H Y, Tu G F, Sun W R, Hu Z Q. Trans Nonferrous Met Soc China, 2011; 21: 2402
|
| [19] | Semiatin S L, Kramb R C, Turner R E, Zhang F, Antony M M. Scr Mater, 2004; 51: 491
|
| [20] | Wang L, Pyczak F, Zhang J, Lou L H, Singer R F. Mater Sci Eng, 2011; A532: 487
|
| [21] | Kramb R C, Antony M M, Semiatin S L. Scr Mater, 2006; 54: 1645
|
| [22] | Pan X L, Sun W R, Li Z, Yang S L, Guo S R, Yang H C, Hu Z Q. Rare Met Mater Eng, 2010; 39: 55
|
| [23] | (潘晓林, 孙文儒, 李 战, 杨树林, 郭守仁, 杨洪才, 胡壮麒. 稀有金属材料与工程, 2010; 39: 55)
|
| [24] | Pan X L, Yu H Y, Tu G F, SunWR, Hu Z Q. Mater Sci Technol, 2012; 28: 560
|
| [25] | Pan X L, Sun W R, Yang S L, Li Z, Guo S R, Yang H C, Hu Z Q. Chin J Mater Res, 2008; 22: 651
|
| [26] | (潘晓林, 孙文儒, 杨树林, 李 战, 郭守仁, 杨洪才, 胡壮麒. 材料研究学报, 2008; 22: 651)
|
| [27] | Gottstein G, Deshpande S. Mater Sci Eng, 1987; 94: 147
|
| [28] | Wang Y, Shao W Z, Zhen L, Zhang B Y. Mater Sci Eng, 2011; A528: 3218
|
| [29] | Ning Y Q, Yao Z K, Liang X M, Liu Y H. Mater Sci Eng, 2012; A551: 7
|
| [30] | Wang K, Li M Q, Luo J, Li C. Mater Sci Eng, 2011; A528: 4723
|
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