大型鍛件坯料內裂紋愈合的物理模擬

米國發; 張軍強; 徐斌; 孫明月

doi:10.13374/j.issn2095-9389.2017.11.010

大型鍛件坯料內裂紋愈合的物理模擬

doi: 10.13374/j.issn2095-9389.2017.11.010

米國發¹,
張軍強^1,2,
徐斌^2,3, ,,
孫明月^2,3

1) 河南理工大學材料科學與工程學院, 焦作 454000
2) 中國科學院金屬研究所沈陽材料科學國家(聯合)實驗室, 沈陽 110016
3) 中國科學院金屬研究所核用材料與安全評價重點實驗室, 沈陽 110016

基金項目:

國家重點研發計劃資助項目(2016YFB0300401)

國家自然科學基金-遼寧聯合基金資助項目(U1508215)

遼寧百千萬人才工程項目[2015]12資助項目

詳細信息

中圖分類號: TG142.1⁺1;TG142.1⁺5
計量
- 文章訪問數: 663
- HTML全文瀏覽量: 216
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- 被引次數: 0
出版歷程
- 收稿日期: 2017-03-20

Physical simulation of internal crack healing in a heavy-forged billet

MI Guo-fa¹,
ZHANG Jun-qiang^1,2,
XU Bin^{2,3
, ,},
SUN Ming-yue^2,3

1) School of Material Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China
2) Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
3) Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

摘要

摘要: 針對鍛造過程中鋼錠內部裂紋缺陷的愈合情況進行研究,設計了裂紋愈合的實驗室模擬實驗與工業級模擬實驗.通過在Gleeble熱壓縮試樣中預制裂紋缺陷,研究了變形溫度和變形量對內部裂紋愈合的影響,發現變形溫度越高,變形量越大,內裂紋的愈合效果越好.為了驗證Gleeble實驗結果的準確性,保證其結果在實際鍛造生產中的適用性,設計了鍛件內部裂紋愈合的工業級模擬實驗.結果表明在1200℃,變形量為40%時,可以有效焊合鍛件內部裂紋.
- 大型鍛件 /
- 內裂紋 /
- 愈合 /
- 變形 /
- 變形溫度
Abstract: The healing behavior of internal cracks in an ingot during the forging process was investigated using laboratory and industrial simulation studies. During the laboratory experiment, specimens with artificial cracks were hot compressed by a Gleeble simulator, and the effect of temperature and deformation ratio on inner crack healing was studied. The experimental result shows that the higher the deformation temperature or greater the deformation, the better the healing effect. To verify the accuracy and applicability of the result in an actual forging process, an industrial experiment was designed and performed. The result shows that internal cracks can be effectively metallurgically bonded at a temperature of 1200℃ and deformation ratio of 40%.
- heavy forging /
- internal cracks /
- healing /
- deformation /
- deformation temperature

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參考文獻(12)

[1]	Sun M Y, Lu S P, Li D Z, et al. Three-dimensional finite element method simulation and optimization of shrink fitting process for a large marine crankshaft. Mater Des, 2010, 31(9):4155
[2]	Erve M, Papouschek F, Fischer K, et al. State of the art in the manufacture of heavy forgings for reactor components in the Federal Republic of Germany. Nucl Eng Des, 1988,108(3):485
[3]	Kawaguchi S, Tsukada H, Suzuki K, et al. Application of 20 MnMoNi 55 steel with lowered Si content to heavy thick steam generator tube sheet forgings. Nucl Eng Des, 1985, 87:249
[4]	Maidorn C, Blind D. Solidification and segregation in heavy forging ingots. Nucl Eng Des, 1985, 84(2):285
[5]	Wang Z H, Sun S H, Wang B, et al. Importance and role of grain size in free surface cracking prediction of heavy forgings. Mater Sci Eng A, 2015, 625:321
[8]	Feng C, Cui Z S, Liu M X, et al. Investigation on the void closure efficiency in cogging processes of the large ingot by using a 3-D void evolution model. J Mater Process Technol, 2016, 237:371
[9]	Harris N, Shahriari D, Jahazi M. Development of a fast converging material specific void closure model during ingot forging. J Manuf Processes, 2017, 26:131
[11]	Bitterlin M, Loucif A, Charbonnier N, et al. Cracking mechanisms in large size ingots of high nickel content low alloyed steel. Eng Failure Anal, 2016, 68:122
[12]	Wang M T, Li D Y, Wang F, et al. Analysis of laminated crack defect in the upsetting process of heavy disk-shaped forgings. Eng Failure Anal, 2016, 59:197
[13]	Park C Y, Yang D Y. A study of void crushing in large forgings:Ⅱ. Estimation of bonding efficiency by finite-element analysis. J Mater Process Technol, 1997, 72(1):32
[15]	Cooper D R, Allwood J M. Influence of diffusion mechanisms in aluminium solid-state welding processes. Proced Eng, 2014, 81:2147
[16]	Cooper D R, Allwood J M. The influence of deformation conditions in solid-state aluminium welding processes on the resulting weld strength. J Mater Process Technol, 2014, 214(11):2576