Skip to main content
    • Aa
    • Aa
  • Get access
    Check if you have access via personal or institutional login
  • Cited by 5
  • Cited by
    This article has been cited by the following publications. This list is generated based on data provided by CrossRef.

    Yoon, D.H. Jung, J.E. Chang, Y.W. Lee, J.H. and Lee, K.S. 2012. Influence of High Temperature Deformation Process Variables on the Microstructure and Thermo-physical Properties of a Ni-Fe-Co Alloy. Transactions of Materials Processing, Vol. 21, Issue. 3, p. 207.

    Wang, S.G. Huang, R.J. Mei, Y. Long, K. Li, L.F. and Zhang, Z.D. 2011. The linear thermal expansion of bulk nanocrystalline Al and SS304 at low temperature. Physica B: Condensed Matter, Vol. 406, Issue. 14, p. 2758.

    Robertson, I. M. and Schaffer, G. B. 2010. Swelling during sintering of titanium alloys based on titanium hydride powder. Powder Metallurgy, Vol. 53, Issue. 1, p. 27.

    Wang, S. G. Mei, Y. Long, K. and Zhang, Z. D. 2010. The Linear Thermal Expansion of Bulk Nanocrystalline Ingot Iron from Liquid Nitrogen to 300 K. Nanoscale Research Letters, Vol. 5, Issue. 1, p. 48.

    Robertson, I. M. and Schaffer, G. B. 2009. Swelling during liquid phase sintering of Ti–Ni alloys. Powder Metallurgy, Vol. 52, Issue. 3, p. 213.


Structural changes and thermal expansion behavior of ultrafine titanium powders during compaction and heating

  • B.B. Panigrahi (a1) and M.M. Godkhindi (a1)
  • DOI:
  • Published online: 01 March 2005

This work represents an attempt to understand the nature of micron and attrition milled nano-sized titanium powders on two different aspects, i.e., pressure-induced phase change and thermal expansion. Contraction in the volume of unit cell in terms of decrease in interplaner spacing (d) has been observed in both powders and tends to restore upon annealing. At a given pressure, nano titanium shows a smaller decrease in d relative to micron titanium. The stress analysis of the compacts indicates higher value of residual stresses and deformations in micron powder than in nano powder. The dilatometric study reveals, first, the release of internal stresses and entrapped gases causes huge expansion in nanopowder compacts during heating. Secondly, there is no significant difference in the expansion coefficients of sintered micro- and nanocrystalline titanium samples.

Corresponding author
a)Address all correspondence to this author. e-mail:
Linked references
Hide All

This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

1.J.C. Jamieson : Crystal structures of titanium, zirconium and hafnium at high pressures. Science 140, 72 (1963).

2.A.K. Singh , M. Mohan and C. Divakar : The kinetics of pressure-induced α→ω transformation in Ti. J. Appl. Phys. 53, 1221 (1982).

3.H. Xia , G. Parthasarathy , H. Luo , Y.K. Vohra and A.L. Rouff : Crystal structures of group IVA metals at ultrahigh pressures. Phys. Rev. B 42, 6736 (1990).

4.C.W. Greeff , D.R. Trinkle and R.C. Albers : Shock-induced α-ω transition in titanium. J. Appl. Phys. 90, 2221 (2001).

6.F.P. Bundy : Pressure-temperature phase diagram of iron to 200 kbar, 900°C. J. Appl. Phys. 36, 616 (1965).

7.H. Liu , R.A. Secco , N. Imanaka and G. Adachi : X-ray diffraction study of pressure- induced amorphization in Lu2(WO4)3. Solid State Commun. 121, 177 (2002).

8.S. Pascarelli , G. Aquilanti , P. Munsch and J.P. Itié : High pressure and high temperature x-ray diffraction study of InAs. Nucl. Instrum. Meth. 200, 439 (2003).

10.O. Dominguez , M. Phillippot and J. Bigot : The relationship between consolidation behavior and particle size in Fe nanometric powders. Scripta Mater. 32, 13 (1995).

11.M. Zhao , X. Li , Z. Wang , L. Song , L. Xiao and B. Xu : The effect of pressure on the specific surface area and density of nanocrystalline ceramic powders. Nanostruct. Mater. 1, 379 (1992).

12.N. Parida , B.B. Pani and B. Ravi Kumar : Acoustic emission assisted compaction studies on iron, iron-aluminium and iron-cast iron powders. Scripta Mater. 37, 1659 (1997).

14.R. Birringer : Nanocrystalline materials. Mater. Sci. Eng. A 117, 33 (1989).

15.K. Lu : The thermal instability of nanocrystalline Ni-P materials with different grain sizes. Nanostruct. Mater. 2, 643 (1993).

16.M.L. Sui and K. Lu : Themal expansion behaviour of nanocrystalline Ni-P alloys of different grain sizes. Nanostruct. Mater. 6, 651 (1995).

17.H. Zhang and B.S. Mitchell : Thermal expansion behavior and microstructure in bulk nanocrystalline selenium by thermomechanical analysis. Mater. Sci. Eng. A 270, 237 (1999).

18.Y.H. Zhao , H.W. Sheng and K. Lu : Microstructure evolution and thermal properties in nanocrystalline Fe during mechanical attrition. Acta Mater. 49, 365 (2001).

19.L.H. Qian , S.C. Wang , Y.H. Zhao and K. Lu : Microstrain effect on thermal properties of nanocrystalline Cu. Acta Mater. 50, 3425 (2002).

20.J.A. Eastman , M.R. Fitzsimmons , L.J. Thompson , A.C. Lawson and R.A. Robinson : Diffraction studies of the thermal properties of nanocrystalline Pd and Cr. Nanostruct. Mater. 1, 465 (1992).

21.T. Turi and U. Erb : Thermal expansion and heat capacity of porosity-free nanocrystalline materials. Mater. Sci. Eng. A 204, 34 (1995).

Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Journal of Materials Research
  • ISSN: 0884-2914
  • EISSN: 2044-5326
  • URL: /core/journals/journal-of-materials-research
Please enter your name
Please enter a valid email address
Who would you like to send this to? *