REINVESTIGATION OF THE SYSTEMS Ti-Al-Cr AND Ti-Al-V. Period covered: May 1, 1956 to November 30, 1957
The Ti-Cr and Ti-V systems were investigated in the range of 2 to 36% Cr and 2 to 36% V in the temperature range 500 to 1150 C (Cr) and 500 to 900 C (V), with both iodide titanium and Bureau of Mines titanium as base material. Conventional and rapid-quenching techniques were employed. In the Ti-Cr system, the beta / alpha + beta boundary was lower than that generally obtained by conventional quenching. The beta transus exhibited a change in slope at about 750 C for both iodide titanium and Bureau of Mines titanium. The beta / beta + TiCr boundary seemed to be shifted towards lower chromium conteat when the Bureau of Mines titanium was used as base. The eutectoid temperature wag found to be between 660 and 670 C for iodide titanium base alloys. In the Ti-V system, the beta / alpha + beta boundary was in agreement with most of the earlier determinations. Below 650 C it was found to be greatly obscured by the presence of an impurity phase. Five tentative isothermal sections of the titanium-rich corner (up to 40% Al and 32% Cr) of the Ti-Al-Cr system were constructed at 200 intervals between 600 and 1400 C. The titanium-rich corner of the Ti-Al-V system was investigated in the region up to 45 wt.% Al and up to 35 wt.% V and between 700 and 1400 C. Eight isothermal sections at 100 intervals are presented. The phases encountered in this region were those which have been identified as being present or probably present in the binary Ti - Al system, namely, alpha , beta , &, Ti/sub 2/Al, and TiAl. (auth)
- Research Organization:
- New York Univ., New York. Coll. of Engineering
- DOE Contract Number:
- AF33(616)-3619
- NSA Number:
- NSA-13-003839
- OSTI ID:
- 4284873
- Report Number(s):
- WADC-TR-58-105; AD-155850
- Resource Relation:
- Other Information: Project title: METALLIC MATERIALS; Task title: TITANIUM METAL AND ALLOYS. Orig. Receipt Date: 31-DEC-59
- Country of Publication:
- United States
- Language:
- English
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