Titanium alloy made brake rotor and its manufacturing method

Details Titanium alloy made brake rotor and its manufacturing method Titanium alloy made brake rotor and its manufacturing method

1998-07-24

2000-10-31

Ip, Sikyin

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148668, 148669, C22F 118

Patent

active

061396591

ABSTRACT:
Modern brake rotors require enhanced resistance to thermal stress in order to withstand vigorous operating conditions. A brake rotor manufactured from (.alpha.+.beta.) titanium alloy will fulfill the thermal stress requirements when an equiaxed grain structure is imposed on the alloy. The equiaxed grains can preferably range from 300 .mu.m to 3 mm in size. The equiaxed grain structure is attained by heat treating the brake rotor at the .beta. phase transformation temperature, followed by quenching. When Ti-6Al-4V titanium alloy is used to form the brake rotor, .beta. phase transformation temperature is 1000.degree. C. the heat treatment temperature range is 986-1200.degree. C. The preferable heat treatment for Ti-6Al-4V alloy is 1050.degree. C. for 2 hours.

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