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 Posted: Thu 21:56, 06 Jan 2011 Post subject: ugg milano LY12 alloy by laser shock peening on fa |
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Laser shock peening on fatigue life of LY12 alloy
Much of the residual compressive stress layer depth. . (3) Laser shock peening can significantly improve the fatigue life of materials or components. L1Yl2 with a central fastening hole alloy sample after the laser shock peening, the crack growth rate lower than the sample without an order of magnitude Shot, the life of electricity is nearly 20 times the latter a reference: [1】 Ni Minxiong . Zhou Jianzhong care are built. Astigmatism and other blasting techniques: jf-q Fun Look behalf of the Afghan Research and crucible 2005. 【1:49.52 _2JYangJM, HerYCHartNanlin. eLasershockpeeningonfatigu ~ behaviorof2024-T3ALlalloywithihstuncrholesandst knocking holes [JJMaterielsScienceandEngineering. 2001. A298 :296-299 [3] Chen Shan San pocket Shot】 aviation maintenance technology and _l_ Ke process. 2004. (5) :30-3i 【4] shoes. Gao Shi Kun, Tan Yongsheng. Zhu surgery and other laser shock processing to be thrown on the dry shade motivation laser, 2005.25 (1) :32-34I5] NallaRKAhenbergerbI. NosterU, ontheinfluenceofmechanicalsurfacetr ~ atmentsde, epromngandLasershockpeeningonthefatJguebeh ~ elorofTi-6AI-4VambientandelevatedtemperaturesIMaterielsScienceandEn Ⅱ black Ⅱ g, 2003. A355216-230 Q Yang ear. Shi Guohua wPs engine red aluminum blade fracture failure analysis [J] flag technology. 2003. f6】: 30.33 [71RuschauJJ, RejiJ, ThompsonR. eta / FatiguecracknucLeationandgrov, 'ihratebehaviorofl ~ -,, ershockpeenedtitanium [】 J. hatemationalJournalat'Fatigue, 1999.21l99-209 field (on the next page 34) at 700 ℃ growing rate of aging, which shows the growing carbide MdC main diffusion-based, with increasing temperature. Taijin towels to enhance the activity of the various elements of the diffusion coefficient increases,[link widoczny dla zalogowanych], the proliferation of speed. So that the grain boundary carbides MC carbides grow faster by EDS EDS,[link widoczny dla zalogowanych], the main component (TiNb) c, mainly in high-temperature range, when Taijin temperature decreases to the M ∞ C-type carbide transformation. Inconcl751 Taijin MC carbide in the alloy in the smelting process. Since the cooling speed is too Shan. Temperature range of memory in the MC carbides MC carbides too late to change to the legacy of ix. In the high-strength corrosion Ni. Co. Cr superalloy stability} I have H {, temperature of aging MC carbides precipitated mainly in the chemicals sector. MC carbide products are distributed in the dispersion; and with a high degree of aging old woman. Grain boundaries and the carbides have a long trend,[link widoczny dla zalogowanych], especially 3 Conclusions (1) Ineonel751 Taijin after 700 ℃ × 1500h and 850 ℃ × 1000h aging, grain boundary analysis for the M} H-phase Cr-rich carbide, the main chain was distributed in the grain boundary on the ball; mainly intragranular precipitates (Ti, Nb) C (2) M is a cr-rich carbide. MC carbides mainly in high-temperature range, when the alloy temperature decreases, the transition to the M-type carbide References: 【1] World long drive,[link widoczny dla zalogowanych], Lin Zhaojie. Profile east. Actinide series of internal combustion gas network development trends Divination I special steel. 1996,17 (5) 26-29 【2】 Yang last regret. Actinides in the door with the smell of raw research and development 【disc special copper-q. 1999.20 (3J: l6-20 [3】 irresolute Ming Yuan lnconel75t Taijin long-term stability of maggots regulation [D】 Beijing: the Beijing University of Technology .2003 [41 Liu Zhongqing. Jian-Xin, Zhang Yi Chuan Nj-high-strength corrosion co-cr high temperature stability of Taiwan,[link widoczny dla zalogowanych], the organization box 【J] _ panel session of the school spread .2002.38 (5): 490 .. 494 field thermal processing technology * 2006 35, l8 of
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