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    • 7. 发明授权
    • Method for rapid solidification processing of multiphase alloys having
large liquidus-solidus temperature intervals
    • 用于液相线 - 固相线温度较高的多相合金的快速凝固加工方法
    • US4540546A
    • 1985-09-10
    • US558612
    • 1983-12-06
    • Bill C. Giessen
    • Bill C. Giessen
    • B22D11/06B22F9/00B22F9/10C22C1/10C22C45/00C22C1/02C21C5/56
    • B22D11/0611B22F9/008B22F9/10C22C1/1042C22C45/00Y10S75/956
    • Rapid solidification processing by liquid quenching is made practical for multiphase alloys having relatively large liquidus-solidus temperature intervals by a new processing technique termed "melt mix reaction" involving chemically reacting two starting alloys in a mixing nozzle in which a melt mix reaction takes place between the chemically reactable components of the starting alloys to form submicron particles of the resultant compound in the final alloy. The mixing and chemical reaction is performed at a temperature which is at or above the highest liquidus temperature of the starting alloys but which is also substantially below the liquidus temperature of the final alloy, and as close to the solidus temperature of the final alloy as possible. Rapid solidification may be accomplished through the utilization of a melt spinning wheel or may be accomplished through the utilization of an atomizing nozzle configuration, with the rapidly solidified alloy containing a matrix with a microdispersion or a precipitate of the resulting compound contained therein. Heat treatment of the rapidly solidified final alloy may be additionally employed to produce precipitate hardening of the final alloy should such microdispersed precipitates not be formed or be formed incompletely during the rapid solidification process.
    • 通过液体淬火的快速凝固处理对于具有相对较大的液相线 - 固相线温度间隔的多相合金是实用的,通过称为“熔融混合反应”的新的加工技术,包括在混合喷嘴中使两种起始合金化学反应,其中发生熔融混合反应 起始合金的化学反应成分,以在最终合金中形成所得化合物的亚微米颗粒。 混合和化学反应在等于或高于原始合金的最高液相线温度的温度下进行,但也大大低于最终合金的液相线温度,并且尽可能接近最终合金的固相线温度 。 可以通过利用熔融纺丝轮来实现快速凝固,或者可以通过利用雾化喷嘴构型来实现快速凝固的合金,其中含有微分散体的基质或其中所含的所得化合物的沉淀物。 如果这种微分散的沉淀物在快速凝固过程中不形成或不完全形成,则可以另外使用快速固化的最终合金的热处理来产生最终合金的沉淀硬化。
    • 8. 发明授权
    • Tool steels which contain boron and have been processed using a rapid
solidification process and method
    • 含有硼的工具钢,并使用快速固化方法和方法进行处理
    • US4362553A
    • 1982-12-07
    • US275629
    • 1981-06-22
    • Ranjan RayDonald E. PolkBill C. Giessen
    • Ranjan RayDonald E. PolkBill C. Giessen
    • B22F9/00C22C33/02C22C38/12C22C38/32C22C38/22C22C38/24C22C38/26
    • B22F9/008C22C33/0257C22C38/12C22C38/32
    • Iron base alloys containing chromium and refractory metals as well as 0.8 to 1.3 wt % boron are disclosed. The alloys are subjected to a rapid solidification processing (RSP) technique, producing cooling rates of about 10.sup.5 to 10.sup.7 .degree. C./sec. The as-quenched RSP ribbon, or powder, etc., consists primarily of a single phase with a body centered cubic structure. After appropriate heat treatments, the rapidly solidified alloys have a microstructure consisting of ultrafine hard particles of metallic carbides and borides and mixtures thereof dispersed in an iron-rich matrix. These alloys exhibit excellent corrosion resistance combined with high hardness, wear resistance and high temperature stability. These heat treated alloys have superior properties which make them suitable for many applications, where high strength and corrosion resistance are required, in particular at elevated temperature, e.g. high temperature bearings.
    • 公开了含有铬和难熔金属的铁基合金以及0.8至1.3重量%的硼。 对合金进行快速凝固处理(RSP)技术,产生约105至107℃/秒的冷却速率。 淬火后的RSP带或粉末等主要由具有体心立方结构的单相组成。 在适当的热处理之后,快速固化的合金具有由分散在富铁基质中的金属碳化物和硼化物的超细硬质颗粒及其混合物组成的显微组织。 这些合金表现出优异的耐腐蚀性,结合高硬度,耐磨性和高温稳定性。 这些热处理的合金具有优异的性能,使得它们适用于需要高强度和耐腐蚀性的许多应用,特别是在升高的温度下。 高温轴承。