Aluminum alloy and its manufacturing method

A technology of aluminum alloy and aluminum alloy body, applied in the field of aluminum alloy

Active Publication Date: 2021-04-13
NOVELIS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, identifying the processing conditions and alloy composition that would provide such an alloy has proven to be challenging

Method used

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  • Aluminum alloy and its manufacturing method
  • Aluminum alloy and its manufacturing method
  • Aluminum alloy and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0081] figure 2 is a graph of the thermal history of Alloy C1 during an exemplary quenching technique and a comparative continuous quenching technique. For comparison, a continuous full water quench (FWQ) and a continuous air only quench (AQ) are shown. The discontinuous exemplary process was initiated at various Alloy C1 coil temperatures including 500°C and 450°C exiting the solidification furnace. Water quenching was performed at various water spray pressures including 6 bar (b) and 2 bar (b). The graph details the rapid cooling of FWQ and the slower cooling of AQ. Alloy C1 was quenched by an exemplary discontinuous quench, starting with the alloy exiting the solidification furnace, and cooled to 500°C by air quenching (referred to as "5006b" and "500 2b"), showing rapid cooling of the alloy but no second comparison. Slow quenching step. Alloy C1 samples quenched by the exemplary discontinuous quench showed discontinuity when the quench was changed from water to air at...

example 2

[0086] Image 6 Yield strength test results for exemplary quench deformation and paint baking techniques employed during processing of exemplary aluminum alloys with various Mn contents are presented. Exemplary aluminum alloys V1 and V2 compositions for this example are described in Table 2 (the balance composition is consistent with the examples described herein):

[0087] Table 2 - Exemplary Alloy Compositions

[0088] alloy Si Fe Cu mn Mg V1 0.85 0.20 0.08 0.07 0.65 V2 0.85 0.20 0.08 0.20 0.65

[0089] Image 6 Shows the increase in yield strength of Exemplary Alloy V1 and Exemplary Alloy V2 undergoing exemplary discontinuous quenching, starting with air quenching as the solutionized coil exits the solidification furnace, and changing to water quenching to quench to about 450°C temperature, and then become air-quenched as the coil cools to about 250°C. Alloys subjected to exemplary quenching, deformation, and aging (2% strain foll...

example 3

[0093] Figure 9 Yield strength test results are shown for samples with compositions comprising Alloy Al (see Table 1 ) produced in a manufacturing setting. Alloy A1 underwent various quenching techniques during processing. like Figure 9 As shown, a full water quench (first set of histogram bars, referred to as "Standard Water"), an air-only quench (fourth set of histogram bars, referred to as "Standard Air"), and an exemplary discontinuous quench were used, so The exemplary discontinuous quenching described begins with exiting the solidification furnace, followed by quenching with water to 100°C (second set of histogram bars, exit at 100°C) and 220°C (third set of histogram bars, "Water, exit at 220°C"). Yield strength after natural aging (T4 temper) and deformation plus artificial aging (T8x temper, 2% strain followed by heating to 185°C and maintaining 185°C for 20 minutes) is shown. Figure 9 The effect of an exemplary quenching technique on an aluminum alloy with hig...

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Abstract

High strength aluminum alloys and methods of making and processing such alloys are disclosed. More specifically, aluminum alloys exhibiting improved mechanical strength are disclosed. The processing method includes homogenization, hot rolling, solutionization and multi-step quenching. In some cases, the processing step may further comprise annealing and / or cold rolling.

Description

[0001] Cross References to Related Applications [0002] This application claims U.S. Provisional Application No. 62 / 435,437, filed December 16, 2016, entitled "Aluminum Alloys and Methods of Making the Same"; 62 / 529,516, the entire contents of which are incorporated herein by reference in their entirety. technical field [0003] The present disclosure relates to aluminum alloys and related methods. Background technique [0004] Recyclable aluminum alloys with high strength are desirable for improved product performance in many applications, including transportation (including but not limited to, for example, trucks, trailers, trains, and ships), electronic applications, and automotive applications. For example, high-strength aluminum alloys in trucks or trailers are lighter than conventional steel alloys, providing substantial emissions reductions to meet new, stricter government emissions regulations. This alloy should exhibit high strength. However, identifying the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/08C22F1/05
CPCC22C21/04C22C21/08C22F1/002C22F1/05
Inventor D.莱夫拉斯J.弗里德利A.德普瓦G.弗洛里
Owner NOVELIS INC
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