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    • 3. 发明授权
    • Free-cutting Ni-base heat-resistant alloy
    • 易切削Ni基耐热合金
    • US06752883B2
    • 2004-06-22
    • US10158167
    • 2002-05-31
    • Kiyohito IshidaKatsunari OikawaShigeki UetaToshiharu NodaTakashi Ebata
    • Kiyohito IshidaKatsunari OikawaShigeki UetaToshiharu NodaTakashi Ebata
    • C22C1905
    • C22C19/056C22C19/053C22C19/055C22C19/058
    • A free-cutting Ni-base heat-resistant alloy excellent in the high-temperature strength and corrosion resistance was proposed. The alloy contains Ni as a major component, 0.01 to 0.3 wt % of C and 14 to 35 wt % of Cr, and further contains at least one element selected from Ti, Zr and Hf in a total amount of 0.1 to 6 wt %, and S in an amount of 0.015 to 0.5 wt %. The alloy has dispersed in the matrix thereof a machinability improving compound phase, where such phase contains any one of Ti, Zr and Hf as a major constituent of the metal elements, essentially contains C and either S or Se as a binding component for such metal elements. The alloy also satisfies the relations of WTi+0.53WZr+0.27WHf>2WC+0.75WS and WC>0.37WS, where WTi represents Ti content (wt %), WZr represents Zr content (wt %), WHf represents Hf content (wt %), WC represents C content (wt %) and WS represents S content (wt %). This successfully suppresses the amount of free S residing in the alloy, which results in an improved machinability while preventing the hot workability from being degraded.
    • 提出了具有优异耐高温和耐腐蚀性的易切削Ni基耐热合金。 该合金含有Ni作为主要成分,0.01〜0.3重量%的C和14〜35重量%的Cr,还含有选自Ti,Zr和Hf中的至少一种元素,总量为0.1〜6重量% 和S为0.015〜0.5重量%。 该合金在其基体中分散有可机械加工的化合物相,其中这种相含有Ti,Zr和Hf中的任何一种作为金属元素的主要成分,基本上含有C和S或Se作为这种金属的结合成分 元素。 该合金还满足WTi + 0.53WZr + 0.27WHf> 2WC + 0.75WS和WC> 0.37WS的关系,其中WTi表示Ti含量(wt%),WZr表示Zr含量(wt%),WHf表示Hf含量(wt %),WC表示C含量(wt%),WS表示S含量(wt%)。 这成功地抑制了存在于合金中的游离S的量,这导致改善的机械加工性,同时防止热加工性降低。
    • 5. 发明授权
    • Titanium alloy having good heat resistance and method of producing parts therefrom
    • 具有良好耐热性的钛合金及其制造方法
    • US06284071B1
    • 2001-09-04
    • US09261388
    • 1999-03-03
    • Akihiro SuzukiToshiharu NodaMichio Okabe
    • Akihiro SuzukiToshiharu NodaMichio Okabe
    • C22F118
    • C22F1/183C22C14/00
    • A titanium alloy having improved heat resistance in addition to the inherent properties of lightness and corrosion resistance. The alloy consists essentially of, by weight %, Al: 5.0-7.0%, Sn: 3.0-5.0%, Zr: 2.5-6.0%, Mo: 2.0-4.0%, Si: 0.05-0.80%, C: 0.001-0.200%, O: 0.05-0.20%, optionally further one or two of Nb and Ta: 0.3-2.0%, and the balance of Ti and inevitable impurities. A method of producing parts from this alloy comprises subjecting the titanium alloy of the above described alloy composition to heat treatment at a temperature of &bgr;-region, combination of rapid cooling and slow cooling or combination of water quenching and annealing, hot processing in &agr;+&bgr; region, solution treatment and aging treatment.
    • 除耐酸性和耐腐蚀性的固有特性外,还具有耐热性提高的钛合金。 该合金主要由Al:5.0-7.0%,Sn:3.0-5.0%,Zr:2.5-6.0%,Mo:2.0-4.0%,Si:0.05-0.80%,C:0.001-0.200重量%组成 %,O:0.05-0.20%,任选进一步的Nb和Ta中的一种或两种:0.3-2.0%,余量为Ti和不可避免的杂质。 从该合金制造零件的方法包括将上述合金组合物的钛合金在β区域的温度下进行热处理,快速冷却和缓慢冷却的组合或水淬和退火的组合,α+ β区,溶液处理和时效处理。
    • 10. 发明授权
    • Thermal fatigue resistant cast steel
    • 耐热疲劳铸钢
    • US07326307B2
    • 2008-02-05
    • US10395236
    • 2003-03-25
    • Shigeki UetaShuji HamanoToshiharu Noda
    • Shigeki UetaShuji HamanoToshiharu Noda
    • C22C38/48
    • C22C38/60C21D1/34C22C38/02C22C38/04C22C38/44C22C38/48C22C38/50
    • Disclosed is a heat resistant cast steel having not only good heat resistance but also good thermal fatigue resistance, which is suitable as the material for engine parts, particularly, such as exhaust gas manifold and turbo-housing, which are repeatedly exposed to such a high temperature as 900° C. or higher. The heat resistant cast steel comprises, by weight percent, C: 0.2-1.0%, Ni: 8.0-45.0%, Cr: 15.0-30.0%, W: up to 10% and Nb: 0.5-3.0%, provided that [%C]-0.13[%Nb]: 0.05-0.95%, the balance being Fe and inevitable impurities, and the cast structure contains dispersed therein, by atomic percent, MC-type carbides: 0.5-3.0% and M23C6-type carbides: 0.5-10.0%. The matrix of the steel is an austenitic phase mainly composed of Fe—Ni—Cr and the steel has the mean coefficient of thermal expansion in the range from room temperature to 1050° C. up to 20.0×10−4 and a tensile strength in the temperature range up to 1050° C. 50 MPa or higher.
    • 本发明公开了一种不仅具有良好的耐热性,而且具有良好的耐热疲劳性的耐热铸钢,其适合作为反复暴露于这样高的发动机部件,特别是排气歧管和涡轮壳体的材料 温度为900℃以上。 耐热铸钢以C:0.2-1.0%,Ni:8.0-45.0%,Cr:15.0-30.0%,W:至多10%和Nb:0.5-3.0%的重量百分比包含,条件是[% C] -0.13 [%Nb]:0.05-0.95%,余量为Fe和不可避免的杂质,并且铸态结构含有分散在其中的原子百分比为MC-型碳化物:0.5-3.0%和M 23 / 6类型碳化物:0.5-10.0%。 钢的基质是主要由Fe-Ni-Cr组成的奥氏体相,并且钢的平均热膨胀系数在室温至1050℃至20.0×10 -4的范围内 >和在1050℃以上的温度范围内的拉伸强度为50MPa以上。